Questions: Charles says to Wes, "If you will mow my lawn, I will give you 15." Wes says nothing, but he mows the lawn. No contract exists under this fact situation, because Wes did not accept Charles's offer.

The answer is false: the original text in the question states that no contract exists because Wes did not accept Charles's offer.

Explanation:

1. False: This statement is false because a contract does exist in this situation. In contract law, an offer can be accepted by performance. Charles made an offer to Wes, stating that he would pay $15 if Wes mowed the lawn. Wes accepted this offer by performing the act of mowing the lawn, which constitutes acceptance by performance. Therefore, a contract was formed when Wes completed the task.

2. True: This option is incorrect because it suggests that no contract exists due to Wes's lack of verbal acceptance. However, verbal acceptance is not necessary when the offer can be accepted through performance, as is the case here. The performance of the task (mowing the lawn) signifies Wes's acceptance of the offer, thus creating a binding contract.