I think the answer is B for that one
<em>Pest resistance occurs when pests (insects, small animals, mites, weeds, and so on) are able to withstand insecticides and thus are not affected. Pest resistance is thought to be a feature of these species. Because of their unique genetic makeup, a small part of the pest population may survive exposure to a pesticide when it is first employed. These people pass on their resistant genes to the following generation.</em>
Answer: A. Arkansas territory organized.
Explanation:
<u>B is incorrect</u> because it was Missouri that would become a slave state.
<u>C is incorrect</u> because it prohibited slavery in territories or states in the Louisiana Purchase NORTH of the Arkansas-Missouri border.
<u>D is incorrect</u> because Maine came into the Union as a free state at this time not California.