Question

your argument is simply abstruse as there is no clarity of thought and coherence in ideas and it also lack vision.
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Answer 1

Answer:

the bird is flying in our school.

Explanation:

I hope this is your answer OK you like my answer please

Answer 2

The correct sentence will be:- your argument is simply abstruse as there is no clarity of thought and coherence in ideas and it also lacks vision.

Explanation: Singular subjects follow singular verbs. As in the given question "it" is singular, so it will follow the singular verb "lacks"