The marks of seven students A, B, C, D, E, F and G in a test were given as follows: A's score was exactly between E's and F's scores. B's score was more than only G's score. C's score was immediately more than B's score. F's score was more than E's score and F did not score the highest. Who scored the highest marks in the test?

D

The given information:

Step 1: F's score was more than E's score and F did not score the highest.

So, F> E

Step 2: A's score was exactly between E's and F's scores.

So, F> A> E

Step 3: C's score was immediately more than B's score.

So, C> B

Step 4: B's score was more than only G's score.

So, F> A> E> C> B> G

Now, we know that F did not score the highest and only D is left without a position

So, D>F>A>E>C>B>G

Therefore, D is the one with highest score.