Which word in this sentence does the adverb describe?

after the storm, water dripped slowly from the flower petals.

a.
storm

b.
water

c.
dripped

d.
slowly

Dripped. The adverb slowly describes how the dripping occured. 

Doulingo is good. you can also watch movies that are in french, i am using this tactic  for japanese  and it a lot. listing to music with  french  lyrics would work well too because  you could absorb  the words while having fun.hope this ! : )