Longitudinal research involves Select one: a. the random selection of participants within a particular population. b. uncovering unconscious motives and conflicts. c. randomly assigning participants to the control and experimental groups. d. observing and measuring the same variables periodically over time.

The correct answer is - option D.

Explanation:

Longitudinal research involves the observational approach is gathering the data for the same variable or the subject over an extended period of time that could be years normally.

This research helps in gathering or collecting data to get insight or aspects that can not be gathered by any other way. It is used in the study or research that involves the development over the period of time such as life span.

Thus, the correct answer is - option D.

why do you want to cheat? i dont take it, so i dont know.

explanation:

some tips: get a tutor

study

ask for

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u