Bullfrog tadpoles are often sold as fish bait, even in areas where they do not occur naturally. when people buy 10 of them and don't use them all, they often dump the remainder into the lake or river. this is an example of . habitat destructionb. extirpationc. inbreedingd. overharvesting of species from the wildan e. intentional introduction species

This is an example of e. intentional introduction species

Explanation:

The bullfrog tadpoles mentioned in the question "are dumped into the lake or river". This illustrates an introduction of a species into a new habitat.

The concept of introduction of species illustrates how by human activity, species arrive at an environment that is not their original habitat.

This is what the question is talking about and hence, that is the correct answer.