Sentence errors detract from the readability of your message and make your reader have to work harder to understand your message.

Read the following sentences, and identify the error.

Eager to make it to the airport on time, my alarm was set for $6$:$15$ a$.$m$.$

The error in this sentence is a

We will be visiting our accounts in California, Oregon, and visiting our accounts in Washington.

The error in this sentence is a