D doesnt fix the sentence because the period in this case breaks the sentence apart but into an incomplete and complete sentence.
"Sometimes he lets us play them." isnt a complete sentence which is a period isnt the way to make this run on sentence better.
"If I were you" is an example of D) passive voice and subjunctive mood.
Passive means you are not the one performing the action, and subjunctive mood is a wish which usually begins with if.
Answer:
It's as easy as this: :)
We will abide by your rules and regulations for filing tax returns.
Explanation:
Probably B because if you use abbreviations you can type quicker but idk
