Answer:
Nick has lower opportunity cost.
Explanation:
Rosa can dig holes in 1 hour. Â
Nick is slow and takes 6 hours to dig the holes. Â
Rosa earns $120 per hour. Â
Nick earns $15 per hour. Â
The opportunity cost of digging holes for Rosa is $120 that she could have earned in that 1 hour. Â
The opportunity cost for Nick is Â
= $15 × 6 Â
= $90
It is evident that Nick has a lower opportunity cost.