Answer:
D. Simon and Hillary have been friends since preschool
Explanation:
The explicit idea stated in this sentence is: "Simon and Hillary have been friends since preschool"
From the given sentence, it is explicitly stated that Simon and Hillary have been friends since preschool. The "He" in the sentence is actually referring to Simon.
When something is explicit, it means that it is clear enough without any hidden detail. Therefore, the sentence made it clear that Simon and Hillary have been friends since preschool.
I can't really answer question 3 or 5 due to not seeing the passage or the picture to said passage, but I can answer question 4 for you. I would say the answer to 4 would be a.
Among the choices, option B. Hasn't, is a singular contraction. "Hasn't" is the shortened word for "has not". The rest of the choices are plural contractions: Don't from do not, Haven't from have not, and Weren't from were not.
