Which sentence uses punctuation correctly?
a. one of my teachers mrs. suazo has run two marathons.
b. one of my teachers mrs. suazo, has run two marathons.
c. one of my teachers, mrs. suazo, has run two marathons.
d. one of my teachers, mrs. suazo has run two marathons.

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.