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.
The author's attitude toward the story or toward the reader is known as the tone.
things are slowing down and problemes are sparring to het resolved