The most appropriate option for writing the underlined part of the sentence is option B "is".
Which grammar rule applies to the sentence?
As the underlined word is "abundance" we can classify it as a singular noun. In this way, the sentence will be correct when the verb tense is in the simple present, observing the nominal and verbal agreement.
Therefore, it is essential to understand the structure of a sentence to correctly substitute its terms and maintain cohesion and coherence.
Find out more about verb tense here:
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