The correct answer is GHO.

The pattern is to take the first letter of the first word, the second letter of the second word, and so on.

BMX - B DNW - D FOU - F GHO - G

The other options do not follow this pattern.

A. GPS - G is the first letter, P is the third letter, S is the fifth letter. This does not follow the pattern of taking the first letter of the first word, the second letter of the second word, and so on.

B. HPS - H is the first letter, P is the third letter, S is the fifth letter. This does not follow the pattern of taking the first letter of the first word, the second letter of the second word, and so on.

C. HPT - H is the first letter, P is the third letter, T is the fourth letter. This does not follow the pattern of taking the first letter of the first word, the second letter of the second word, and so on.

D. HQS - H is the first letter, Q is the fourth letter, S is the fifth letter. This does not follow the pattern of taking the first letter of the first word, the second letter of the second word, and so on.