Step 1: Understanding the Reaction.
The reaction involves the conversion of benzyl alcohol into an aromatic substitution product under the given reaction conditions. The presence of sulfuric acid (H\(_2\)SO\(_4\)) and high temperature suggests a substitution reaction.
Step 2: Analyzing the Options.
- (A) Ethenyl aromatic product is not expected from this reaction as there is no formation of a double bond.
- (B) Aromatic substitution product is the correct product formed from the reaction with benzyl alcohol.
- (C) Aromatic elimination product does not fit as the reaction is substitution, not elimination.
- (D) Aromatic rearranged product is incorrect because no rearrangement occurs in this reaction.
Step 3: Conclusion.
The correct answer is (B) Aromatic substitution product as it matches the expected product.