Final answer:
The experimental probability of the coin landing on heads in Sally's case is 52.5%, calculated by dividing the 105 occurrences of heads by the total 200 flips.
Step-by-step explanation:
The experimental probability of the coin landing on heads is calculated by dividing the number of times heads came up by the total number of flips. In Sally's case, she flipped the coin 200 times and it landed on heads 105 times. The experimental probability is thus 105/200, which simplifies to 0.525 or 52.5%. So the experimental probability of the coin landing on heads is 52.5%, which corresponds to answer choice A.