Grendel
Grendel is a 1971 novel by American author John Gardner. It is a retelling of part of the Old English poem Beowulf from the perspective of the antagonist, Grendel.
I think your best choice would be a, but it can very well be d.
I agree. While helping others with their problems, it really opens your eyes as to how good you really have it most of the time. As the saying goes, "you could always have it worse".
Answer:
Mail
Explanation:
The noun 'mail' is the subject, as it is what the sentence is talking about.