The answers are B, D and I.

Blank (i):
The sentence indicates that the nature of the candidate's comments is calculated and strategic. Given that the candidate is a long-standing target of critics who view him as radical, the word for blank (i) should describe comments that are intentionally designed to avoid controversy or criticism. The correct choice is "platitudinous," which refers to statements that are commonplace or lacking in originality, often used to avoid controversy.

Blank (ii):
The sentence suggests that the candidate is aware of the criticisms against him as a radical figure and understands the necessity of adopting a particular attitude to counteract those perceptions. The word here should describe an attitude or behavior that contrasts with being seen as radical, perhaps being aggressive or confrontational. Therefore, the correct choice is "innocuous," indicating an attempt to appear harmless or not offensive, which contrasts with the radical image.

Blank (iii):
The sentence indicates that the candidate needs to present himself in a certain way to overcome critiques and appear in a positive light. Considering this, the word that best fits here should describe a leader who tries to create harmony or seek agreement. The correct choice would be "conciliatory," signifying a leader who aims to reconcile differences or promote unity, contrasting with a polarizing figure.