GMAT Sentence Correction (SC) | Re: The data being collected in the current geological

The data being collected in the current geological survey are providing a strong warning for engineers as they consider the new dam project, but their greatest importance might lie in how they influence the upcoming decision by those same engineers on whether to retrofit 75 bridges in the survey zone.

Data can be singular or plural as per the context. The 'they' in the non-underlined portions gives us the idea that the 'data' has to be treated as plural in this sentence
Decision set 1: DATA plural
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