Peripheral are used to a.) calculate and output data b.) calculate and process c.) input and output d.) input and calculate data

c. input and output

Explanation:

look in 01.01 on page 6 and if you click on the word "peripheral" it says

Peripherals: devices that connect to a computer to provide input or output function.

it does not say A.calculate and output data. B. calculate and process. nor does it say D. input and calculate data.

it does say input and output like as it says in the definition.

hope this helped and have a great day!

edit: I just retook the test today 12/2/2020 because I got a b on the last test on the first day of school. so this is the correct answer to the question if you are wondering. And the final grade that I got today was 100% so you can trust me on that!