A. Lucid
B. Wily
C. Witty
D. Flat
✅ The correct answer is option D.
Lucid : expressed clearly; easy to understand.
Lucid : expressed clearly; easy to understand.
Wily : skilled at gaining an advantage, especially deceitfully.
Witty : showing or characterized by quick and inventive verbal humour.
Flat : (of a person) without energy or enthusiasm.
Insipid : lacking vigour or interest.
Synonym of Insipid is Flat