The question asks:

Among four aromatic compounds, which one has the lowest melting point?

However, the actual structures/options A, B, C, and D are missing in the prompt. Since melting point depends strongly on molecular structure, symmetry, intermolecular forces, and packing in the crystal lattice, the answer cannot be derived uniquely without seeing the compounds.

1. What determines melting point in aromatic compounds?

For aromatic compounds, melting point is influenced mainly by:

1. Symmetry of the molecule
   More symmetrical molecules pack better in the crystal and usually have higher melting points.

2. Intermolecular forces
   Stronger dipole–dipole interactions, hydrogen bonding, etc. generally increase melting point.

3. Molecular shape and packing efficiency
   Poor packing usually lowers melting point.

A common trend in substituted benzenes is:

• para-isomers are often more symmetrical, so they usually have higher melting points.
• ortho/meta-isomers often pack less efficiently, so they may have lower melting points.

2. Why the answer cannot be determined here

The options are shown as:

• A:
• B:
• C:
• D:

but no structures/names are provided. Therefore, there is not enough information to compare their melting points.

3. Comparison with stored correct answer

The stored correct answer is B, but since the options themselves are absent, I cannot independently verify that choice.

So I do not agree with the stored answer on the basis of the information provided, because the problem statement is incomplete.

If you share the structures or names of options A–D, I can determine the correct answer precisely.