Solution:

The girl in the red shirt.
As she is eating a sandwich that looks like it's years old, and that might kill her.

Solution:

Chilwell can go through as all the person whose name contains even number of letters can go through the door.

This is a classic green glass door riddle.

Solution:

The blazer from man3 is on the boss's chair. So he is the boss.

Solution:

The kids have 4 slices of pizza in their hands but only three pieces are missing from the pizza box.

Solution:

Person-1

Explanation:
Person-3: Some will say the answer to be person-3 as his body is floating in the water. But the question is do dead bodies float in water?. The answer is yes, but it takes at least 2 to 3 days for a dead body to float. In the starting 1 to 2 days, a dead body sink under the water, thereafter it starts floating. Thus, person-3 is not dead.

Person-2: There is vibration in the water. This makes us sure that person-2 is not dead.

Person-1: If you see closely, he is having a book in his hand and it is in the water. Also, he seems to be in a subconscious state.

So, the answer to this puzzle is Person-1.

Solution:

They are playing basketball with a soccer ball.

Solution:

Rick wasn't at home. He Parked his car after snow built up on the driveway.

Solution:

A

Solution:

Girl 3

Our feet usually and unconsciously point toward the one with who we are most interested.

Solution:

3

Explanation:
If I had 4 eggs -- Its just imagination.
A thief gives me 3 -- I go three eggs.
My farm rooster lays 5 eggs -- A Rooster can't lay eggs.