GETS BRAINLISTAs the archaeologist digs deeper, the color of the dirt become lighter shades of brown became

becoming

becomes

correct as is

C) Becomes

Explanation:

In one sentence, verbs have to be the same tense. The verbs in this sentence are "digs" and "becomes". As you can see, "digs" is in the present tense and ends with s, so becomes has to be in the present tense as well. Became is in the past tense. Becoming indicates present AND future tense, but we want only present tense. And become is the present plural tense, but remember, the thing that is doing the verb is the color of the dirt, which is singular. SO, it is NOT correct as is. That's why the answer is C) becomes

Hope this helps :)