Step 1: Management Planning.
Planning establishes the groundwork for attaining organizational objectives by forecasting and determining the action path.
Step 2: Option Analysis.
- (A) Objective Setting: A core aspect of planning is defining precise, attainable objectives to guide the organization.
- (B) Plan, Action, and Strategy Definition: Planning encompasses identifying the actions and strategies needed to fulfill set objectives.
- (C) Resource Allocation and Arrangement: Distributing requisite resources is a vital element of efficient objective achievement in planning.
- (D) People Motivation and Inspiration: This action falls under the directing function, not planning.
Step 3: Determination.
Selections (A), (B), and (C) are the correct choices, as they are fundamental elements of the planning function.
Final Determination: \[\boxed{\text{The correct answer is (3) (A), (B) and (C) only.}}\]