Carolyn was thrilled when she found out her new employer offers two ________ vacation time.

a. week’s
b. weeks
c. weeks’
d. week

Nope. Two weeks is plural - more than one.

Yes. c: weeks'

To find the correct answer, we need to understand the concept of possessive forms and how they are used with time expressions.

In this sentence, the word "vacation" is being modified by a time expression to indicate a specific duration. We need to correctly express the possessive form of the time expression "two weeks."

To form the possessive of a singular noun, we typically add an apostrophe and an "s" ('s). For example, "the week's activities" or "my friend's car."

However, when we have a plural noun ending in "s," we only add an apostrophe (') after the final "s" to indicate possession. For example, "the cats' toys" or "the students' assignments."

Now let's analyze the options:

a. week’s: This option indicates possession for a singular noun. It does not match the plural noun "weeks," so it is incorrect.

b. weeks: This option is the plural form of the noun "week," but it does not indicate possession. We need to use the possessive form, so it is incorrect.

c. weeks’: This option correctly forms the plural possessive of the noun "weeks" by adding only an apostrophe at the end. This indicates that the vacation time belongs to or is associated with the "weeks." Therefore, "two weeks'" is the correct choice.

d. week: This option is the singular form of the noun and does not match the plural noun "weeks." It is also not in the possessive form, so it is incorrect.

Therefore, the correct answer is:

c. weeks’