What is the primary source of fuel for the brain?
a. proteins
b. fats
c. carbohydrates
d. vitamins

it's answer C

That is Carbohydrates

Explanation:

"The brain's primary source of fuel is carbohydrates,". "Those carbohydrates are broken down into sugar in a form called glucose. Your brain uses glucose as its main source of energy."

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.