GMAT Sentence Correction (SC) | Nearly unrivaled in their biological diversity, coral reefs provide

Nearly unrivaled in their biological diversity, coral reefs provide a host of benefits that includes the supply of protein for people, protecting shorelines, and they contain biochemical sources for new life-savingmedicines.
Meaning Analysis :
Phrase : Nearly unrivaled in their biological diversity
Clause 1: Coral reefs have a list of benefits that includes the supply protein , protect shorelines
Clause 2: and they contain biochemical sources for new life-saving medicines

Error Analysis : 1,
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