Question

Which sentence has an inappropriate shift in number?

A dog can learn many new tricks if they are given the proper training.

The children swam hard at swim practice, so they were tired that night.

Students can be successful if they study often and ask questions.

After the boy moved to a new school, he was eager to make new friends

Answer 1

I am going to say A dog can learn many new tricks if they are given proper training

Step-by-step explanation:

Answer 2

A dog can learn many new tricks if they are given proper training