Which is the cause of the effect above? (1 point)

A. Maori culture is similar to the culture on the Cook Islands. Maori culture is similar to the culture on the Cook Islands.
b. The winds in that part of the Pacific blow southeast.
c. Migratory birds leave from the Cook Islands.
d. The stars could help direct the sailors.

It is not possible to determine the cause of the effect given above based on the information provided.