Question

modern synthesis theory of evolution
coevolution
the study of coevolution sheds light on the interdependent evolution of species,
where organisms evolve in response to each others influence. this phenomenon
contrasts with natural selection, which primarily focuses on individual species
adapting to their environment.
coevolution also contrasts with charles darwins theory of gradualism, which heavily
influenced his theory of natural selection. gradualism is the belief that species
transition into higher forms over time. coevolution often results in mutualistic
relationships, where species evolve traits that benefit both parties.
what is coevolution?
only one species evolving at a time
species evolving completely independently
the evolution of a single species in isolation
species evolving in response to each other

Explanation:

The text defines coevolution as the interdependent evolution of species where organisms evolve in response to each other's influence. This directly matches the option "species evolving in response to each other". The other options (only one species evolving at a time, species evolving completely independently, the evolution of a single species in isolation) are contrary to the definition of coevolution provided in the text.

Answer:

species evolving in response to each other