What are the characteristics of halley's comet? select all that apply.
a. long period comet
b. short period comet
c. exceptionally long orbit
d. spends most of its time in its oort cloud
e. orbits the sun about once every 75 years

I know for sure c and e are correct, I'm pretty sure b is correct, making a incorrect, and after looking at Halley's orbit, I'd assume that it spends more time in the kuipler belt then it does the Oort cloud, making d incorrect. So, in summary; b, c, and e would be the correct answers.

Hope this helped!