Final answer:
The probability of Jean winning the raffle after purchasing a ticket is 10%, as the price of the ticket doesn't affect the winning odds.
Step-by-step explanation:
The probability that Jean will win the raffle after buying a $10 ticket, given that the probability of winning is 10%, remains 10%. The price of the ticket does not affect the probability of winning, which is a predefined likelihood determined by the raffle's rules. Hence, the correct answer to the question is c) 10%.