Use reasoning to lead to the answer of the following question:
Protonemas develop into what?\nOptions:\n- (A) alveoli\n- (B) ferns\n- (C) lmestone\n- (D) disease\n- (E) illness\n- (F) parasites\n- (G) gas\n- (H) spores

(H)
Flowers produce spores that develop into gametophytes.

Gametophytes arise from a protonema.

Flowers produce spores from a protonema.

.

Thus, the answer is (H)