Question

Which sentence below shows correct use of em dashes? If the cat meows one more time I know – he will – I am going to have to get the treats. If the cat-meows one more time, I know, he will – I am going to have to get the treats. If the cat meows one more time – I know he will – I am going to have to get the treats. If the cat meows one-more-time I know he will I am going to have to get the treats.

Answer 1

"If the cat-meows one more time, I know, he will – I am going to have to get the treats."

This is the sentence that provides the proper use of dashes. 

Answer 2

The correct answer is C. If the cat meows one more time – I know he will – I am going to have to get the treats.

Explanation:

In grammar, one of the main uses of em dashes (–) is to replace parentheses or commas to introduce further explanations, extra information, examples or comments, usually by enclosing the information in em dashes. In the case of the sentence "If the cat meows one more time I know he will I am going to have to get the treats" the information that is a comment or remark is "I known he will" because this is thought of the speaker and does not grammatically belong to the sentence and therefore should be enclosed using em-dashes. This means the sentence that shows the correct use of em dashes is " If the cat meows one more time – I know he will – I am going to have to get the treats".