Research using fmri has found that, although is activated when paying attention to the sounds of familiar voices, it is not activated when paying attention to the sounds of unfamiliar voices.

Answer – The fusiform face area (FFA)

Research using Functional Magnetic Resonance Imaging (fMRI) has shown that when we are paying attention to the sounds of familiar voices, the fusiform face area (FFA) is activated, but it is not activated when we are paying attention to the sounds of unfamiliar voices.

the answer is tom watson. tom watson created this epitaph because he wanted to increase the sympathy felt by people towards the murder of mary phagan.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."