Why is lunchtime important for student's?

I believe #2 is the answer 

2) All of these ++++++++++++++RIGHT ANSWER+++++++++++++

Students need to refresh their minds and they need to eat for the physical and mental development.

I think the best answer is : all of these

Option>>>>>>>>>>>>>>>>>>>>>

(4) They need to refuel their bodies and minds

Option2 is the most accurate as it's inclusive to all.

2) All of these.........................