Final answer:
The correct option is D, which correctly identifies HCl as Hydrochloric acid (acid), Mg(OH)₂ as Magnesium hydroxide (base), H₂O as Water (neutral), and MgCl₂ as Magnesium chloride (salt).
Step-by-step explanation:
The correct chemical name and type of compound for each reactant and product in the given chemical reaction can be identified as follows:
Therefore, the answer is D. Hydrochloric acid - Acid; Magnesium hydroxide - Base; Water - Neutral; Magnesium chloride - Salt.