Answer:
Both metaphor and foreshadowing.
Step-by-step explanation:
In the given statement, "There's daggers in men's smiles," Donalbain uses a metaphor to convey a deeper meaning. The phrase implies that people's smiles can hide deceit or harm, comparing their smiles to daggers. This metaphorical statement suggests that not everything is as it seems and foreshadows the presence of danger or betrayal in the play. Therefore, the line serves as an example of both metaphor and foreshadowing.