which word or phrase in the sentence provides the best clue to the meaning of the italicized word in the sentence?

(pls the one in parentheses)

Puppies will often sit (expectantly) looking at their owners when they want to play

a) wagging there tail

b)often sit
c)when they want to play
d)puppies will

The best clue to the meaning of "expectantly" is the phrase "looking at their owners."