Question

which sport was started thousands of years ago as a primary means of transportation?
a. dog sledding
b. cross - country skiing
c. swimming
d. both a and b

Explanation:

To determine the sport started as a primary transportation, we analyze each option:

• Dog sledding (A) was used by indigenous peoples in cold regions for transporting goods/people over snow.
• Cross - country skiing (B) has ancient origins, with early humans using skis for travel across snow - covered landscapes.
• Swimming (C) is mainly for survival in water or recreation, not a primary transportation method historically.

So both dog sledding and cross - country skiing were used as transportation, making option D correct.

Answer:

D. Both A and B