Which of the following could be considered a credible argument for getting an extension on school work?

a. give me extra time on my assignment, my dog ate the first copy.
b. give me extra time on my assignment, my computer crashed and erased all of my files.
c. give me extra time on my assignment, aliens landed in my backyard last night and i lost track of time.
d. give me extra time on my assignment, my grandfather's cousin's dog is sick.

which of the following is not a characteristic of a solid argument?

a. relevant
b. credible
c. sufficient
d. entertaining