A semicolon can be used a. to join two sentences that are ...

[bobbie]

A semicolon can be used
 
  a. to join two sentences that are closely related.
 b. before a conjunction adverb that joins two independent clauses.
 c. to separate items in a series if any of the items already include commas.
  d. all of the above

Question 2

All of the following rules about forming possessives are true except
 
  a. Form possessives of singular nouns by adding an apostrophe and an s.
 b. Form the possessive of singular nouns of one syllable ending in s by adding an apostrophe and an s.
  c. Form the possessive of plural nouns not ending in s by adding just an apostrophe.
 d. Form the possessive of plural nouns ending in s by adding just an apostrophe.

[mceravolo]

Answer to Question 1

d

Answer to Question 2

c