Two organisms are in the same kingdom another pair of organisms are in the same species which pair has more in common why? (science question i accidentally pressed math)

The pair of organisms that has more common would be the organisms that have the same species. The kingdom is more general because all the organisms are only classified into six kingdoms; whereas, species are the more specific group. Organisms with the same species are very closely related and they are more capable of interbreeding and producing fertile offspring.

The answer would be c