Probability categories are often delineated into five cases: improbable, _________, occasional, _________, and frequent.

• A. remote, probable
• B. unlikely, common
• C. distant, frequent
• D. remote, possible

Answer: (A)

Probability categories are arranged from least likely to most likely. After “improbable,” the next level should express a very small but nonzero chance—that’s “remote.” Then comes “occasional,” indicating it can happen but not regularly. The next higher level should signal a clear likelihood, which is “probable.” The highest category is “frequent.” So the pair that fits this ascending sequence is “remote” and “probable,” creating the familiar five-step scale: improbable, remote, occasional, probable, frequent. The other options use terms that don’t align with this standard progression or introduce nonstandard wording, breaking the established order.