Answer:
a golf resort and a ski resort
Step-by-step explanation:
Complementary resources are those ones that can substitute for each other, and when taken together consumer uses less of both resources than when they are taken seperately.
A ski resort and a golf resort are both facilities that are used by sports enthusiasts.
So for example if there are 40 sports enthusiasts they can use the golf resort, the ski resort, or a combination of both.