Answer:B
Explanation: A linking verb connects a subject to a verb and also describes the action that is done by the subject. The linking verb cannot express an action on its own. It needs the subject of the sentence to express an action.
An example of a linking verb is "be" which is the most commonly used. The purpose of "be" is to indicate the state of the action subject in a sentence.
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4L because 200 x 20 = 4000mL
and 1000 mL is 1L so 4000mL is 4L
gl!