Answer:
To highlight the important parts...?
Explanation:
B because it inclues 2 clauses and a connective
Answer: A
Explanation: I believe the answer is A, because of this definition I found :
Anything explicit is completely clear and includes details. If you don't want your little brother to become a snake snack, you'll need to give him explicit instructions for feeding your pet boa constrictor safely. This adjective describes anything that is clear, detailed, and easy to understand.
The first paragraph, mainly because you want the person to instantly know who you are and why you are writing this letter to them.