Which term means 'short of breath, panting'?

• A. asthenia
• B. asth
• C. -ase
• D. aur

Answer: (B)

The essential idea here is recognizing a root that describes breathing difficulty. The fragment “asth” comes from the Greek term for panting or shortness of breath and is the part you’d see in words related to breathing trouble, like asthma or asthmatic. That root directly signals the sensation of breathlessness or rapid breathing.

The other options don’t convey that meaning: asthenia means weakness, the suffix -ase is used to form enzyme names, and aur- relates to the ear. So the root that best matches “short of breath, panting” is the one that denotes breathing difficulty.