GMAT Test Prep: SC-58900508 GMAT Sentence Correction | TOEFL IELTS GMAT GRE SAT ACT PTE ESL

A are serving the colony by tending juveniles, gathering food, building the nest, or they battle

B are serving the colony in that they tend juveniles, gather food, build the nest, or battle

C serve the colony, tending juveniles, gathering food, building the nest, or by battling

D serve the colony by tending juveniles, gathering food, by building the nest, or by battling

E serve the colony by tending juveniles, gathering food, building the nest, or battling