Answer:
a. beliefs
Explanation:
In this example, there is a noun belief that can be described like acceptance that something is true but there is no evidence, and believing in this without evidence. The noun in the singular is a belief, but in this example, it should be in the plural. The noun with ending in -f get -s in the plural. This noun does not change -f into -v like in examples: knife-knives or wolf- wolfes. If it changes -f into -v it should be believes and that is a present time of the verb to believe.
Answer:
(a) diagram a.(b) the resultant force of a is equal and the resultant force of b is not(unbalanced)
A demand is like i want this done now and a request is like can you do this for me
B. cruelly built and muscular
he has an athletic build