Correct Answer:
D. to confuse
Disconcert means to confuse or unsettle.
- Correct answer - to confuse: it has the same meaning as Disconcert.
- to sing in harmony: to sing together in tune - wrong, it does not mean the same as Disconcert.
- cancel a programme: to call off a schedule - wrong, it does not mean the same as Disconcert.
- to pretend: to make believe - wrong, it does not mean the same as Disconcert.