6550. The Director leaves on Tuesday on tour of the overseas branches of the company.

✅ The correct answer is option C.
Round : shaped like a circle or cylinder.

Private : belonging to or for the use of one particular person or group of people only.

Journey : an act of travelling from one place to another.

Personal : belonging to or affecting a particular person rather than anyone else.

Tour : a journey for pleasure in which several different places are visited.

Synonym of Tour is Journey