How should the seat belt be worn?

How should the seat belt be worn?
A)Very tight, to be well secured.
B)Rather loose, to be able to easily reach all areas of the vehicle's interior.
C)Fitted to the body, neither too tight nor too loose, and properly fastened.Correct
The chest strap should pass over the collarbone, halfway between the shoulder and the neck, and should descend across the centre of the chest. The lap strap should be placed over the hip bones, always below the abdomen. Once the seat belt is properly fastened, pull the strap slightly upward so that it fits snugly against the body.
Improper use of the seat belt, incorrect seat adjustment, as well as placing towels or cushions on the seat can promote the submarine effect, which is when, in a traffic accident, the seat belt is unable to restrain us and the body slides under the lap strap.