The correct answer is B) observation.
Among the four methods, the method of data collection that is involved when an individual counts the number of vehicles passing designated locations on the Los Angeles freeway system is observation.
When researchers use the method of observation to collect information, this means that a person acts as the observer, he or she is physically in the location to observe the phenomena. In this case, an individual is placed in a specific part of the freeway to observe and count the number of vehicles that cross the designated location.
The main reason why United States was involved in Vietnam is that the United States believed in the so called Domino effect: that if one country becomes communist, others might become communist too. So they got involved to stop the spread of communism (option a)
B. Native Americans is the correct answer!
Answer:
yes his consumption could change
Explanation:
His consumption of pizza could change since he might need to consume less pizza to afford more tacos. We could use the marginal rate of substitution to explain this where we describe how much goods one is willing to give up for the other while retaining maximum utility/satisfaction. So Jonny may be asked here what combination of tacos and pizza would give him same satisfaction while keeping good budget and retaining satisfaction.
Answer:
It is advised to have comprehensive maintenance work done for your vehicle at least twice a year.
Explanation:
The benefit of maintaining one's vehicle is that it increases the life of the car. Mostly, maintaining a vehicle is less frequent than repairing parts. One should regularly check the fluid levels, tire pressure, lights, brakes and battery.
Most cars use the fluids like engine oil, radiator coolant and so on. Many fluids are also vehicle dependent. A common example of unnecessary vehicle maintenance is changing the engine oil too often. Comprehensive Vehicle maintenance should be done at least two times in a year. This would keep the vehicle in healthy condition.
