Read the passage below, then answer the question that follows.

All around the world, people love to be scared. Every culture has ancient tales of gruesome ghosts or malevolent monsters. Surviving spooky stories around a campfire has become a rite of passage for many young people. Horror games featuring jump scares have surged in popularity, as have online streams where gamers record themselves playing—and reacting to—these scary scenarios. According to Comscore, a company that evaluates media performance, Americans spent around $700 million on horror films in 2022 alone. But why do people watch creepy movies or read spine-chilling stories, even though they make us jump out of our seats? As it turns out, there may be a scientific explanation.

When we experience fear, our brain reacts as if we were in peril. Believing there is danger, the brain releases a rush of chemicals meant to help us survive. Chemicals like adrenaline make their heart race and heightens their senses, causing them to become more alert. Anyone who has ever ridden a roller coaster is probably familiar with the effect that fear has on our bodies: they might get a surge of energy and feel like running, get butterflies in their stomach, and feel like their heart is going to pound out of their chest.

In the past this response would have made it easier for ancient humans to run, hide, or fight when faced with a threat. But nowadays, it can be used for fun. Deep down, when we walk through a pitch-black haunted house or read a ghost story, we know that we are truly safe. Rather than feeling like our lives are at risk, we can enjoy the mix of excitement and anticipation that comes with being scared. Purposely getting scared can also serve as a workout for our brain. It keeps the brain sharp and ready for real danger while giving us a sense of relief and new confidence when the scary stuff is over. Being scared is a natural part of our biology—as is enjoying it!

What is the central idea of the bolded third paragraph?

Being scared is our body's way of tricking us when we are actually safe.
Being scared helped ancient humans survive unique threats.
Being scared can actually have many positive effects.
Being scared is only helpful when walking through a haunted house.