Dr. williamson conducts research examining the effects of electrical stimulation in certain parts of the brain. dr. williamson has found that stimulation of this part of the brain in laboratory rats will result in changes to the rats' mating, eating, and socialization behaviors. based on this description, which part of the brain is dr. williamson most likely to be studying?

Dr. Williamson most likely to be studying "hypothalamus".

The hypothalamus is a little locale of the brain. It's situated at the base of the mind, close to the pituitary gland.  

While it is very little, the hypothalamus assumes a pivotal part in numerous critical capacities, including discharging hormones, directing body temperature, keeping up day by day physiological cycles, controlling craving, overseeing of sexual conduct and controlling enthusiastic reactions.

the number of senators, and representatives, the state has in congress.

in this scenario it would be the consumer demand as most influential in making the decision. the band members need to figure out where and from whom they will make the most money, in other words who out of the two consumer groups - football fans or car drivers - will spend their money, who is more likely to contribute to their cause and buy what they are offering.