Which sentence contains an error in grammar?

Question

A.
When I am feeling angry, I count to ten, but sometimes I am still angry.

B.
Because Tomás wanted to ride his bike, when he met his classmates downtown.

C.
Since you are the fastest runner, I think you should enter the race.

D.
Emma needed a new notebook, so she left the meeting early.

Answer 1

The sentence that contains a grammatical error is:

B. Because Tomás wanted to ride his bike, when he met his classmates downtown.

This sentence is incorrectly structured because the clause "when he met his classmates downtown" is not correctly connected to the first part. A correct version could be something like: "When Tomás met his classmates downtown, he wanted to ride his bike."