Why do water molecules "stick together"?

a. the partially positive charge on the oxygen of one molecule
attracts the partially negative charge on the hydrogen of another.

b. the partially negative charges on the oxygen atoms of two
different water molecules are attracted to each other.

c. the partially positive charges on the hydrogen atoms of two
different water molecules are attracted to each other.

d. the partially negative charge on the oxygen of one molecule
attracts the partially positive charge on the hydrogen of another.

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.