Question

which phrase describes a typical feature of plains?
usually have a high relief
have steep sides
usually have a high elevation
can be interior

Explanation:

• "Usually have a high relief": Plains have low relief (difference in elevation), so this is wrong.
• "Have steep sides": Plains are flat, so they don't have steep sides (that's more like mountains/hills).
• "Usually have a high elevation": Plains can have low or moderate elevation (e.g., coastal plains are low - elevation), so this is wrong.
• "Can be interior": Interior plains (like the Great Plains in North America) exist, so this is a typical feature.

Answer:

D. can be interior (assuming the options are labeled A - D as per the order: A. usually have a high relief, B. have steep sides, C. usually have a high elevation, D. can be interior)