Answer: The correct answer is Option 1.
Step-by-step explanation:
From the given options:
Option 1: Neutralization reaction
This reaction is defined as the chemical reaction where an acid reacts with a base to produce a salt and water molecule.

Option 2: Synthesis reaction
This reaction is defined as the chemical reaction where substances combine in their elemental state to form a single compound.

Option 3: Decomposition reaction
This reaction is defined as the chemical reaction where a single substance breaks down into two or more simpler substances.

Option 4: Reduction reaction
This reaction is defined as the reaction where a substance gains electrons. The oxidation state of the substance gets reduced.

For the given chemical reaction:

Here, an acid reacts with base and it produces water and a salt. This reaction is defined as a neutralization reaction.
Thus, the correct answer is Option 1.