Question

1. which sentences use apostrophes correctly? the cats tail is fluffy. its color is blue. the students desks were in row. the dogs collar is red.

Explanation:

1. "The cats’ tail is fluffy." is correct if there are multiple cats and the tail belongs to them. The apostrophe after the plural -s indicates possession by multiple entities.
2. "Its’ color is blue." is incorrect. "Its" is a possessive pronoun and does not take an apostrophe. The correct form is "Its color is blue."
3. "The students’ desks were in rows." is correct if there are multiple students and the desks belong to them. The apostrophe after the plural -s shows possession.
4. "The dog’s collar is red." is correct as it shows the collar belongs to a single dog. The apostrophe -s indicates singular possession.

Answer:

The cats’ tail is fluffy.
The students’ desks were in rows.
The dog’s collar is red.