Answer: 3) Confounding variable
Explanation:Confounding variable is the variable that indicates about the external influential factors that produces the manipulated consequences of independent and dependent variable.This variable can lead to producing useless outcomes in an experiment.
According to the question, the changes occurring in interest of student in algebra can be due to the outside factors which are not generating the actual results and thus, experiment is getting ruined.
Other options are incorrect because application variable remain same for the experiment,system variable are the variables of certain system and reliability variables describe about the variable on which dependent or stable.Thus, the correct option is option(3)
Answer:
Explanation:
An economic activity takes place when resources such as capital goods, labour, manufacturing techniques or intermediary products are combined to produce specific goods or services. Thus, an economic activity is characterised by an input of resources, a production process and an output of products (goods or services). - brainlist if correct
Answer:
The correct answer would be Verbal Communication.
Explanation:
When someone is able to convey his message to the other person or group of persons, in a strong manner, with clear and unambiguous delivery of message, the person is said to have extra ordinary communication skills. There are different types of communications, like verbal, writing, gestures, facial, body, etc. The best way to communicate through the other person is through mouth. So verbal communication is considered to be the extensive communication skill among all others.
C. Lessons learned in setting up state government were helpful in setting up the United States government
I think the voyage of Amerigo Vespucci was the most important because it showed all of Europe that what Christopher Columbus thought was the indies was actually new undiscovered land.
