Kapur et al.'s (1994) PET study of the processing of words in either a shallow or deep manner demonstrated, among other things, that which region of the brain is activated during deep processing?

The left prefrontal cortex

Explanation:

The prefrontal cortex is acknowledged not only to be involved in emotional responses, but connected in numerous ways with other branch of the brain that are in charge of controlling dopamine, norepinephrine, and serotonin, three neurotransmitters that are vital in regulating the mood.

It also helps people in setting goals and achieving it. It obtains input from several parts of the brain to process information and adapts consequently. The prefrontal cortex contributes to a range of executive functions, including: how words are being processed in the brain and the final output, Focusing one's attention e.t,c.

uhh idk for sure but i think it makes it difficult to pump the oil through the oil rigs