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)
The correct answer is 3
Stuart is walking past his bedroom door and accidentally slams his elbow into the door frame. The pain is sharp, immediate, and intense. The next morning his pain is a dull ache that bothers him throughout the day. The initial pain Stuart felt was caused by <u>fast</u> fibers, whereas the pain he felt the next morning was caused by <u>slow</u> fibers.
The caste system in India is a model for organizing society into class divisions based on religious precepts. In this system, the stratification of society occurs according to the birth of the individual in a particular family.
Likewise, the color of the skin was essential to determine the caste to which a person belonged. Individuals with the lightest skin tone were linked to privileged castes. As a form of racism and segregation, which causes a huge difference in treatment and differentiation among Indians.
