Select the correct option: The board will convene next Friday, final approval is expected.

Question

Select the correct option:

The board will convene next Friday, final approval is expected.

1. A. at which
2. B. on which
3. C. when (Correct answer)
4. D. whereupon

Correct Answer

Option C — when

Detailed Solution & Explanation

The correct answer is when.

Key Points

• The blank introduces a non-defining relative clause describing a point in time, so a relative adverb of time is needed.
• When is the correct choice: *The board will convene next Friday, when final approval is expected.*
• 'at which' and 'on which' need a noun-phrase antecedent to attach to, and 'whereupon' means 'immediately after which', which distorts the sense — the approval is expected *on* that day, not as a consequence of the meeting.

Additional Information

• The three relative adverbs each carry their own role: when for time, where for place, and why for reason (as in *the reason why*).
• In a non-defining clause the comma is compulsory, and the information it adds is supplementary — remove it and the main sentence still stands complete.
• Compare the defining use, which takes no comma: *the day when the results are announced* identifies which day is meant rather than merely adding detail.