Positive reinforcement select one:
a. decreases the desired behavior.
b. decreases the frequency of negative behavior.
c. increases the desired behavior.
d. reduces the frequency of undesired behavior.

B.) Decreases the frequency of negative behavior.

Explanation:

first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place.

answer; i believe the correct answer is prefrontal cortex;