Final answer:
The correct sentence is option C: 'Wearing a three-piece suit, the conference spokesperson delivered his speech.'
Step-by-step explanation:
The correct sentence is option C: 'Wearing a three-piece suit, the conference spokesperson delivered his speech.'
In this sentence, the subject, 'the conference spokesperson', is performing the action of delivering the speech. The subordinate clause 'wearing a three-piece suit' provides additional information about how the spokesperson appeared while delivering the speech.
Using the correct sentence structure helps convey the intended meaning clearly and effectively.