Answer:
B. sepamos
Explanation:
We know that the answer must be in the nosotros form because of the use of "vamos" later in the sentence. Using this context, we can conclude that the entire sentence is using "nosotros", and the nosotros form of saber is sepamos.
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El martes, 2 de enero de 2018.
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Birds, monkeys, lizards, bats, mice, rodents, and all sorts of other animals.