The consistent use of the same verb form or tense in a single sentence

the answer is a because the astrophel does more and sidney goes to the astrophel more than stella.

i cannot see any of the options

one of the central themes of edward abbey's work has been his staunch opposition to the glen canyon dam on the colorado river that created lake powell, destroying stunning scenery and wildlife habitat, endangering many rare species of fish and animals, and also irreparably destroying many important archaeological sites which provided information about the early inhabitants of the united states.