Step 1: Understanding the Reaction.
The question asks about the correct reagent to convert the given compound into the desired product. This involves understanding the reagents and how they facilitate specific transformations in organic chemistry.
Step 2: Analyzing the Options.
- (A) \( O_3/H_2O - \text{Zn} \) is used for ozonolysis, but it is not applicable in this case.
- (B) \( \text{CrO}_3 + (CH_3CO)_2O \rightarrow \) Methyl Benzene is correct as it shows the reaction to form methyl benzene.
- (C) \( \text{C}_6\text{H}_5\text{NH}_2\text{CrO}_3 \) is incorrect for this reaction.
- (D) \( \text{KMnO}_4/H_2SO_4 \) is a strong oxidizing agent but does not lead to the desired methylation.
Step 3: Conclusion.
The correct answer is (B) \( \text{CrO}_3 + (CH_3CO)_2O \rightarrow \) Methyl Benzene as it correctly shows the desired reaction.
