For the Following Sentences, Select the Letter of the Incorrect

Multiple Choice

For the following sentences, select the letter of the incorrect past tense verb in each group. In the movie Jurassic Park , scientists cloned dinosaurs that then escaped and threatened the safety of their keepers; this story leaded people to wonder if such a thing could happen with Lyuba, but that isn't likely.

A) cloned
B) escaped
C) threatened
D) leaded