Question

Identify the comma rule that the following sentence breaks:

Answer 1

Answer:

C) Use a comma to separate coordinate adjectives.

Explanation:

When there are two adjectives modifying the same noun the comma must be used to separate them. Only coordinate adjectives require the comma between them in the same sentence. In this case, the sentence should be written as follows:  

In their homeroom classes, students learned of a new, very strict rule that would affect their parking privileges.

Answer 2

The comma rule that this sentence breaks is C. use a comma to separate coordinate adjectives.
A new very strict rule is written incorrectly - there should be a comma between the words new and very strict.