Final answer:
To approximate the probability using the empirical method, divide the number of times the coin comes up heads by the total number of tosses. In this case, the probability is 0.46.
Step-by-step explanation:
To approximate the probability using the empirical method, we divide the number of times the coin came up heads by the total number of tosses. In this case, the coin came up heads 230 times out of 500 tosses. So the probability is 230/500, which simplifies to 0.46. Therefore, the answer is a) 0.46.