Which of the following became the most influential and central machinery for deciding what path and strategy India would adopt for its development after its independence?

The Planning Commission

The correct answer is Option 2 - The Planning Commission

The Planning Commission was set up in March 1950 by a simple resolution of the Government of India.
The Prime Minister was its Chairperson.
It was an extra-constitutional and non-statutory body.
It became the most influential & central machinery for deciding what path & strategy India would adopt for its development.
It had an advisory role and its recommendations became effective only when the Union Cabinet approved these.