If in a certain language GAMBLE is coded as FBLCKF, how is FLOWER coded in that language?

The correct answer is (d).

In the given language, each letter is coded by the letter three places after it in the alphabet. For example, G is coded as F, A is coded as B, M is coded as P, and so on.

To code FLOWER, we start with F and code it as E. Then we code L as M, O as N, W as T, and E as D. This gives us the code EMNXDS.

The other options are incorrect because they do not follow the coding scheme. For example, in option (a), G is coded as M, which is not three places after G in the alphabet. In option (b), A is coded as K, which is not three places after A in the alphabet. In option (c), E is coded as G, which is not three places after E in the alphabet.