English grammar error-spotting (comparatives with ‘‘senior/junior’’ take ‘‘to’’, not ‘‘than’’): Read the four parts and identify the error: ‘‘Though senior in age, / his father is junior than / my father in service. / No error.’’

Given data

• A: ‘‘Though senior in age,’’
• B: ‘‘his father is junior than’’
• C: ‘‘my father in service.’’
• D: ‘‘No error.’’

Concept / Approach
Adjectives denoting rank/position (junior, senior, inferior, superior, prior) take the preposition ‘‘to’’ instead of ‘‘than’’ for comparison.

Step-by-Step evaluation
Part B should read: ‘‘his father is junior to my father in service.’’

Correction
‘‘Though senior in age, his father is junior to my father in service.’’

Common pitfalls

• Using ‘‘than’’ after rank adjectives due to analogy with regular comparatives.

Final Answer
his father is junior than