Question

The travel agency CAN NOT be contacted through
1) a phone call
2) an email
3) a visit
4) their website​

Answer 1

3) The Travel agency can not be contacted through A Visit..

Answer 2

"The travel agency CAN NOT be contacted through a visit"

More about Travel Agency:

                         A travel agent is a person who has full understanding of tourist product like destinations, modes of travel, climate, accommodation, and other region of the service sector. He acts on the support of product providers or principles and in return gets a commission.  

Technically, a travel agent is an owner or manager of an agency, but other employees are responsible for counselling tourists and selling packages tours or individual components of travel products. An agency means the workplace of travel agent or organization where all travel goods and services are gathered and coordinated for the smooth conduct of travel agency business.