The seatbelt across your chest should have about fist width of slack

a. three

b. two

c. one

d. no

The correct answer is option (c) i.e. one

The seat belt across your chest should have about one fist width of the slack. Because the seat belt across your chest is required to have minimum fist width of the slack to hold the body in place and to avoid slamming of the body against the seat belt in case of a collision at high speeds. To have one fist width of the slack, makes it a safest to wear it in case of any collision. 

You will hear a hissing sound because of the carbon dioxide escaping the can or bottle

Your answer is 32 hope i