What is the name of the 4 legged articulated rough-terrain robot that walks, runs, climbs, and carries heavy loads?

• A. BigDog
• B. SpotMini
• C. Atlas
• D. Cheetah

Answer: (A)

The main idea here is recognizing a famous four-legged robot designed specifically for rough-terrain movement with the ability to carry heavy loads. BigDog fits that description exactly: a four-legged robot built to walk, run, and climb over uneven ground while pulling a substantial payload. Its hydraulic legs and onboard control system keep it stable as it shifts between gaits and handles a load, even on challenging terrain. That combination of quadraped stability, versatile locomotion on rough terrain, and payload capability is what makes BigDog the best match. The other options refer to robots with different focuses: SpotMini is a smaller indoor quadruped for lighter tasks, Atlas is a humanoid robot, and Cheetah focuses on running speed rather than carrying heavy loads on rough terrain.