Sin·cere
sinˈsir/
adjective
free from pretense or deceit; proceeding from genuine feelings.
"they offer their sincere thanks to Paul"
synonyms:heartfelt, wholehearted, profound, deep;More
(of a person) saying what they genuinely feel or believe; not dishonest or hypocritical.
if I were you I'd probably use a formal format i.e. sir or madam
My answer would be choice B.
I got this because the boy in trying to persuade his parents into giving him a higher allowance.
Answer:
An old man who live in a village
I pray for you because this looks hard
Answer:
an analytical report about pollution