Question

Select the sentence that uses all apostrophes correctly.
Group of answer choices

As Tinas' skill at studying increased, her grades improved.

As Tina's skill at studying increased, her grades' improved.

As Tina's skill at studying increased, her grades improved.

As Tina's skill at studying increased, her grade's improved.

Answer 1

Answer:

The answer would be C: As Tina's skill at studying increased, her grades improved.

Explanation:

Since Tina is the only noun here owning something, and she is a singular object, using one apostrophe before the S is the correct answer