While mood disorders such as depression and bipolar disorder are serious mental health conditions that require treatment,short spells of bad moods are a normal part of the human experience.Be it advertising or social media,people have wrongly l happiness like a commodity,an end goal,or a permanent state of mind.2,allowing oneself to experience disappointment,frustration,longing,and other negative moods is 3 as part of our learning process.In some cases,a bad mood can 4 0ffer some benefits A new study from Canada found high-reactive individuals（i.e.people who feel bad moods more strongly）performed better on memory tests than their 5."It has been suggested that some of our thinking skills may 6 benefit from being in a bad mood because a bad mood 7 us to adopt a more analytic mindset and pay closer attention to detail,"said the lead author.Researchers believe there is a scientific 8 for the trope of the tortured artist or the idea that great creative works are 9 0ut of negative emotions more often than not.Take the example of music-from Fleetwood Mac's"Rumours"to Kanye West's"My Beautiful Dark Twisted Fantasy,"some of the most 10 acclaimed albums of all time were created when their respective artists were experiencing emotional turmoil."In some cases,intense negative emotions can create powerful self-reflective thought and perseverance,11 increased creativity,"one study stated.So the next time you happen to be down in the dumps,try t0 12 it with a creative outlet 13 writing or painting.In the brain,negative moods are 14 to the presence of a threat.This results in heightened awareness,making us more 15 0f our surroundings i.e.paying more attention to social cues,body language,etc*This effect can put you in a better place to 16 intentions or actions and notice 17 someone is trying to deceive you.18,past research has presented some surprising findings,linking a slightly negative mood with lower 19 to stereotype other people.People in a good mood may be prone to stereotyping-which is classified 20 a form of"heuristic processing"by cognitive psychologists.17选？
A.how
B.why
C.if
D.what