Help!
Choose which conflict is being described in the following paragraph.

Portia ran faster around the track. "One more lap . . . just one more lap," she kept telling herself. Her legs and arms pumped faster as she pushed herself harder. Then, in the last leg of the race, the leader of the race, Portia Johnson, got a leg cramp and fell to the track in immense pain.

a) character vs. character
b) character vs. society
c) character vs. nature
d) character vs. self
e) character vs. technology