Introduction:
The Silver Mirror test is a chemical test used to detect the presence of aldehydes in a given compound. It involves the reaction of an aldehyde with Tollens' reagent, which is a solution of silver nitrate in ammonia.

Explanation:
The compounds given in the options are acetaldehyde, acetone, formaldehyde, and benzophenone. Let's evaluate each compound to determine if it gives a positive Silver Mirror test.

Acetaldehyde (Option A):
Acetaldehyde is an aldehyde compound with the chemical formula CH3CHO. When acetaldehyde reacts with Tollens' reagent, it forms a silver mirror on the inner surface of the reaction vessel. This observation confirms the presence of an aldehyde group in the compound.

Acetone (Option B):
Acetone is a ketone compound with the chemical formula (CH3)2CO. Ketones do not react with Tollens' reagent and hence do not give a positive Silver Mirror test. Therefore, acetone is not the correct answer.

Formaldehyde (Option C):
Formaldehyde is an aldehyde compound with the chemical formula CH2O. Similar to acetaldehyde, formaldehyde reacts with Tollens' reagent to produce a silver mirror. Thus, formaldehyde gives a positive Silver Mirror test.

Benzophenone (Option D):
Benzophenone is a ketone compound with the chemical formula (C6H5)2CO. As mentioned earlier, ketones do not react with Tollens' reagent, so benzophenone does not give a positive Silver Mirror test.

Conclusion:
Based on the explanation above, the correct answer is option A (Acetaldehyde) and option C (Formaldehyde). These compounds contain aldehyde groups, which react with Tollens' reagent to produce a silver mirror, indicating the presence of aldehydes.