Answer:
Explanation:
A reliable source is one that is based on strong evidence, providing a thorough, well-reasoned theory, argument, discussion, etc. Scientific, peer-reviewed articles or books for students and researchers -written by researchers. Original research, sufficient bibliography
The answer is B. The linking verb is 'is'. Linking verbs do not show any action but they connect the subject of a sentence to a word that gives information about that subject.
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