Among the given resonating structures of molecules negative mesomeric effect is represented by:

Step-by-step solution

The negative mesomeric effect ( -M effect) is observed when a substituent withdraws electron density from a conjugated system (such as a benzene ring) through resonance. This results in a decreased electron density in the ring, typically placing positive charges at the ortho and para positions. In option (A), the - OCH ₃ group donates a lone pair of electrons to the ring, showing a +M effect and creating negative charges at the ortho and para positions. In option (B), the - OH group donates a lone pair of electrons