A group of 20 rats are chosen to be fed a new drug to test for its effectiveness. This is an example of a sample.
True - False

True

Explanation:

A sample is a small part that represents the whole.

Most often times, in an experiment, samples are usually tested for an observation. It is often easier to handle and manipulate a sample of a population than the whole lot.

answer; bodies of water store heat during the day and release it at

it is either c or d and i know for sure it is not a or b