Which of the following best describes how behavioral isolation can prevent two species from interbreeding?

1. members of two species compete for the same territory and the same mates.
2. one species mates only in the winter, while the other species mates only in the fall.
3. the two species have different mating rituals that only attract mates within their own species.
4. when the two species produce offspring, the offspring do not survive to reach sexual maturity.