Answer: reads
Explanation:
For this sentence, the best correction would be one that continue the present indefinite tone of the word "usually". When a person is said to "usually do something," it means that they will continue to do said things or do it often.
It is therefore best that the verb following it will be in a present indefinite tense. The present indefinite tense for "read" is "reads". Sentence therefore becomes:
"She usually reads the newspaper".
