In an experiment, researchers exposed half of the participants to loud noise during a memory-encoding task. The room was quiet for the other half of the participants. Later, all participants were given a memory test and the number of correct items recalled was obtained for each participant. What is the independent variable?

the noise level during the encoding task

Explanation:

An independent variable in the context of an experiment is the part of an experiment that is being tested and does not depend on some other part of the experiment. Which in this case would be the noise level during the encoding task. That is because the noise level is the variable that is being changed for each group and does not depend on anything else, unlike the memory test which depends on the noise level.

i believe the answer is: returns on investments, no wages

people who belong in upper class society would most likely get there by obtaining multiple source of income, which a certain percentage of ownership for businesses. since most of them are job creator, they would most likely get their money from profit, not wages.

answer; /// the above statement is (true);