10. The correct answer is (D).
Putting F and H together creates a significant block to place. Iturbe already occupies one of the two possible Wednesday slots, so the FH block can’t go there. H can’t be on Monday, so the only place to put F and H is on Tuesday. J and G are flexible in where they can go, but at least one must go on Monday.
(A) We know this cannot be true. Eliminate it.
(B) This is possible, but doesn’t have to be true. Eliminate it.
(C) Again, this is possible, but not necessary. Eliminate it.
(D) This is one of the deductions we made. It is the correct answer.
(E) This is possible, but J or G could be on Wednesday as well. Eliminate it.