Which choice best explains why scientists may use volunteers to help with an investigation? A. Scientists have a large amount of data to collect.

B. Scientists must spend a lot of time creating graphs to analyze the data.

C. Scientists want to help volunteers learn more about the scientific process.

c

Explanation:

well volunteers are use to help and learn so i think c is the correct answer

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.