I believe the answer would be c brainstorming because they're are all free writing about one of the questions.
researching would take longer than a minute because researching is not necssarily shared when grouping, when i think of research i think of, its a topic your write in school or if you are in a job that requires this kind of research.
exploring current events wouldnt be it either in my opinion because its on a particular topic, and events is more than one.
surverying i think wouldnt be it either because is observing and when surveying they have different sections like whats your favorite candy or color.
lets say theres options between m&m's, reesees, skittles, or twix..
40% say they prefer twix
35% say they prefer reesee's
20% say they prefer skittles
and 5% say they prefer m&m's
or in colors
blue
purple
yellow
70% say they like blue
20% say they like purple
10% say they like yellow
I hope this helps you, have a wonderful day/evening
dont forget to smile because its the weekend and christmas is almost here
and if you do not like school remember to say oof on sunday night lool
if any issues with my answer let me know, i always like feedback in case im right or wrong, just to better help people in the future.
-Wolfs c: