Someone trying to add a long series of three digit numbers is probably experiencing increased brain waves and bloodflow to which brain structure?
a. reticular formation
b. thalamus
c. left hemisphere
d. right hemisphere

Someone trying to add a long series of three-digit numbers is probably experiencing increased brain waves and blood flow to the left hemisphere of the brain structure.

Option: (C)

Explanation:

The brain is divided into various functional parts that dictate and control the functions associated with certain disciplines. When the brain is engaged in activities that involve numeracy, the left hemisphere of the brain exhibits the highest activity as it is responsible for logical processing and reasoning.

This is highly correct because infact i just had a essay done yesterday so yeah that's pretty much what you need to do