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-saving medicines.

A. coral reefs provide a host of benefits that includes the supply of protein for people, protecting shorelines,
B. coral reefs provide a host of benefits: they supply people with protein, they protect the shorelines,
C. coral reefs provide a host of benefits that include supplying protein for people, as well as shoreline protection,
D. a coral reef provides a host of benefits; they supply protein for people, the protecting of shorelines,
E. a coral reef provides a host of benefits, including protein for people, protecting shorelines,

OA:B

In Choice C, why is the parallelism wrong? How 'as well as' could be used in right construction?