In India, the organization responsible for implementing the Government of India`s policy in all matters concerning telecommunications is the Digital Communications Commission. The Digital Communications Commission (DCC) is the highest decision-making body in the Department of Telecommunications (DoT), which is under the Ministry of Communications.

Let`s dissect the other options to understand why they are not the correct answer:

Option 2: Telecom Regulatory Authority of India (TRAI) is an important organization in the telecommunications sector of India, but its role is to regulate and monitor the telecom industry, not to implement government policies.

Option 3: Telecom Advisory Committee (TAC) is a committee that provides advice and recommendations to the government on various policy matters related to telecommunications. It does not have the authority to implement policies.

Option 4: Telecommunications Consultants India Limited (TCIL) is a government-owned consultancy and engineering company that provides technical and consultancy services in the field of telecommunications. It does not directly implement government policies.

In conclusion, the correct answer is Option 1, Digital Communications Commission, as it is specifically responsible for the implementation of the Government of India`s policy in telecommunications matters.