Answer: Opportunity cost
Explanation:
Opportunity cost is basically arranging your schedule from that which is of great importance to the next, till the least important. It is understood that most of our activities are not giving same energy, especially when we understand some better than the others, this is where opportunity cost comes in, allowing you to arrange all activities from that which needs much attention to that which needs less, this is what Felix was doing that his wife needed to understand
 
        
             
        
        
        
Answer:
 A) The US sent two representatives to buy the Louisiana Territory from France in 1803.
Explanation:
The statement that best describes the Louisiana Purchase is "The US sent two representatives to buy the Louisiana Territory from France in 1803."
Robert Livingston was the US Minister to France. President Jefferson ordered him to negotiate with France the Purchase of New Orleans. Negotiation went slow with French Charles Maurice de Talleyrand. That is why President Thomas Jefferson sent James Monroe to France to help Livingston with the negotiation. The negotiation ended when the United States accepted to pay France $11,250,000 for the Louisiana territory (828,000 square miles). The deal was done on May 2, 1830.
 
        
             
        
        
        
Explanation:
Weathering breaks down rocks; erosion moves them.
Weathering has to do with air; erosion has to do with rocks.
Weathering occurs only in winter; erosion occurs year-round.
Weathering can be chemical or physical; erosion is only chemical.
 
        
                    
             
        
        
        
The correct statement is that Sarah and Angelina Grimké sacrificed their ties to their former community for the sake of reform. So, the correct option is A. 
Sarah and Angelina were reform activists being put under forced situation to cut their ties with their former community as they wanted to bring about a reform to the slavery system. 
<h3>Reform Activists</h3>
- Sarah and Angelina were determined to end the slavery system that had existed in their region for a prolonged period of time. They had led to activism for ending women slavery. 
- However, they belonged to a community which was primarily engaged in enslaving people, especially women. So, they were under a forced requirement to cut the ties with their community. 
Hence, the correct option is A that Sarah and Angelina had to cut and sacrifice their ties to their former community in order to reform the activism of woman slavery. 
Learn more about reform activists here:
brainly.com/question/9984406
 
        
             
        
        
        
State of affairs in use of steroids in diffuse intrinsic pontine glioma: an international survey and a review of the literature J Neurooncol.
A survey is a study approach used for accumulating information from a predefined organization of respondents to gain statistics and insights into diverse subjects of interest. they could have a couple of purposes, and researchers can behavior it in lots of approaches depending on the method selected and the take a look at's purpose.
Land surveying includes both geodetic surveyings, used for big areas and taking into account the curvature of the earth's floor (see geodesy), and plane surveying, which deals with regions small enough that the earth's curvature is negligible and can be ignored.
A survey is achieved which will discover, describe, monument, and map the bounds and corners of a parcel of land. it would additionally encompass the topography of the parcel, the vicinity of buildings and different enhancements made to the parcel.
Learn more about the survey here;
brainly.com/question/25257437
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