Answer: D. it only partially dissociates in solution.
Step-by-step explanation:
Strong acid is defined as the acid which completely dissociates when dissolved in water. They have low pH. These releases
ions in their aqueous states.

Weak acid is defined as the acid which does not completely dissociates when dissolved in water. They have high pH. These releases
ions in their aqueous states.

Thus the correct option is it only partially dissociates in solution.