The correct answer is a permanent government agency was necessary to achieve recovery and to prevent future farming catastrophes
An idea is considered to be the first of the acts of understanding, limited to the simple knowledge of something. An idea, therefore, is a mental image of an object or the rational knowledge that is generated from the natural conditions of understanding.
The notion of central, on the other hand, has several uses. It can be about the space where coordinated actions converge and what is the basic or essential of something.
The central idea, therefore, is the most important content of a work, a proposal, a project, etc. Without this central idea, the work would not be understood or would lose its value.