Question

One of these is Not a type of force.
a) contact force
b) field force
c) a and b
d) all of the above

Answer 1

Neither — both are types of force. Contact forces (e.g., friction, normal) and field forces (e.g., gravity, electromagnetic) are real force categories, so none of the given choices correctly identifies a non-type. The correct response would be "none of the above" (not listed).