_________ is the 'lifeline' of our country.
Railways
Airways
Waterways
None of these
__________ is the process of moving people, goods etc by barge, boat , ship or sailboat over a sea, ocean, lake, canal, rivers etc.
Air transport
Rail transport
Water transport
The _____________ of Kerala are linked with canals and are used as waterways.
Lagoons
Lakes
Pozhi
At Kntic ocean
The vehicles are called the different means of ___________.
Communication
Transport
Food
Shelter
____________ is where a train runs along a set of two parallel steel rails.