The correct answer is B.

Explanation: The sentence "You missed the match, ____________" is a statement in the past tense, so the appropriate tag question should also be in the past tense to match the statement.

- B. didn't you? is the correct tag question to complete the sentence because it matches the past tense of the main statement ("You missed the match").

Other options:
- A. don't you?: This is present tense and does not match the past tense of the statement.
- C. hadn't you?: This is past perfect tense, which is not appropriate for the simple past tense of the statement.
- D. doesn't you?: This is incorrect because "doesn't" should be "don't" and is used for present tense, not past.

Thus, "didn't you?" best completes the sentence.