Explanation:

- Benzene is a planar cyclic molecule with a hexagonal structure.

- The carbon atoms in benzene are sp2 hybridized.

- The correct bond angle in benzene is 120 degrees due to the trigonal planar geometry around each carbon atom.

- Option:4 - 120 degrees is correct for benzene.

- Option:1 - 60 degrees: This bond angle is typical for equilateral triangles, not benzene.

- Option:2 - 150 degrees: Unrelated to benzene's planar structure.

- Option:3 - 90 degrees: Common in square planar molecules, not benzene.