Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to…

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

If you want to firm up your body, head to the gym. If you want to exercise your brain, listen to music. There are few things that stimulate the brain the way music does. If you want to keep your brain engaged throughout the aging process, listening to or playing music is a great tool. It provides a total brain workout.

Research has shown that listening to music can reduce anxiety, blood pressure, and pain as well as improve sleep quality, mood, mental alertness, and memory. Still, experts are trying to understand how our brains can hear and play music. A stereo system puts out vibrations that travel through the air and somehow get inside the ear canal. These vibrations tickle the eardrum and are transmitted into an electrical signal that travels through the auditory nerve to the brain stem, where it is reassembled into something we perceive as music.

Experiments have been conducted to observe this strange yet fascinating phenomenon. Johns Hopkins researchers have had several jazz performers and rappers produce music while lying down inside an fMRI (functional magnetic resonance imaging) machine to watch and see which areas of their brains light up. Kiminobu Sugaya and world-renowned violinist Ayako Yonetani have been teaching one of the most popular courses in The Burnett Honors College - “Music and the Brain”. The two explain how people with neurodegenerative diseases such as Alzheimer’s and Parkinson’s also respond positively to music.

“Usually in the late stages, Alzheimer’s patients are unresponsive,” Sugaya says. “But once you put in the headphones that play their favourite music, their eyes light up. They start moving and sometimes singing. The effect lasts maybe 10 minutes or so even after you turn off the music.”

Music is structural, mathematical and architectural. It’s based on relationships between one note and the next. You may not be aware of it, but your brain has to do a lot of computing to make sense of it, and thus, benefit from it.

(Adapted from: https://www.hopkinsmedicine.org/health/wellness-and-prevention/keep-your-brain-young-with-music )

According to the paragraph, what did the researchers from John Hopkins ask the participant to do?