I think it's a or d because i don't see any errors in those sentences.
The Ural Mountains is the answer. Keep studying hard!
Answer:
Can it be random sentience like: James, the star quarterback, strode over, confidence radiating off him in waves. or does it need to be more specific?
Explanation:
LETTERS A AND B for the correct answer
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.