Choose the statement that expresses the idea most correctly.
The usage of the phrase "as well as" is preceded by a comma.
In a sentence where "as well as" is used, the verb must agree with the noun before the "as well as" phrase. Here, the verb was/were refers to the noun 'professor'. As professor is singular, the correct verb to be used here is 'was'.
Hence, option A is correct.
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