English grammar error-spotting (prepositions with days; article with ‘‘Board meeting’’): Choose the erroneous segment; pick ‘‘No error’’ only if all parts are correct: ‘‘Will you be / at Board meeting / on next Wednesday? / No error.’

Given data

• C uses ‘‘on next Wednesday’’.

Concept / Approach
With deictic modifiers like ‘‘next/last/this’’ before a day, drop the preposition ‘‘on’’: ‘‘next Wednesday’’, not ‘‘on next Wednesday’’. (Also, in formal style add the article to B: ‘‘at the Board meeting’’.)

Correction
‘‘Will you be at the Board meeting next Wednesday?’’

Common pitfalls

• Keeping ‘‘on’’ before ‘‘next/last/this’’ with days.
• Omitting ‘‘the’’ before a specific meeting name/title (stylistic improvement).

Final Answer
on next Wednesday?