The given reaction involves the nitration of a benzene derivative. In this reaction, concentrated nitric acid (HNO₃) is used as the nitrating agent, usually in the presence of a catalyst such as sulfuric acid, under moderate temperature (30°C).

The starting compound is a benzene ring with two carboxylic acid groups (COOH) in the meta positions relative to each other. In electrophilic aromatic substitution reactions, such as nitration, carboxyl groups are deactivating and meta-directing due to their electron-withdrawing nature.

Let's analyze the positions where the nitro group (NO₂) might add:

1. The carboxyl groups direct incoming substituents to the meta positions relative to themselves.
2. Considering the deactivating nature of COOH, the most feasible position for the incoming NO₂ would be at the position adjacent to one of the COOH groups, but still meta to both.

Based on these points, the major product will most likely have a nitro group added to the position which is para to one COOH and ortho/meta to the other COOH, respecting the meta-directing effect of the COOH groups.

The correct structure according to the given options is:

This product aligns with the prediction given the meta-directing influence of the carboxylic acid groups.