The correct answer is B. Overhead.
Overhead transmission lines are the most common type of transmission line in India. They are used to transmit electricity over long distances. Overhead transmission lines are made up of two or more conductors that are suspended from towers. The conductors are insulated to prevent them from touching each other. Overhead transmission lines are a cost-effective way to transmit electricity. They are also relatively easy to maintain. However, overhead transmission lines can be unsightly and can interfere with radio and television reception.
Underground transmission lines are a less common type of transmission line in India. They are used to transmit electricity over short distances. Underground transmission lines are made up of insulated cables that are buried underground. Underground transmission lines are more expensive to build than overhead transmission lines. However, they are less unsightly and do not interfere with radio and television reception.
The answer to the question “Most of the high voltage transmission lines in India are” is B. Overhead.