The question asks to identify the primary dimensions of an organisational structure from the given options. An organisational structure defines how job tasks are formally divided, grouped, and coordinated.

Understanding Organisational Structure Dimensions

Let's analyze the options provided to determine which ones represent primary dimensions of organisational structure:

• A. Marketing: Marketing is a functional area or a department within an organisation. While it's a part of the overall business operations, it is not a fundamental dimension used to design the structure itself.
• B. Departmentalisation: This is a crucial dimension. It refers to the basis by which jobs are grouped together. Common bases include grouping by function (e.g., marketing, finance), product, geography, process, or customer. This directly shapes how the organisation is structured.
• C. Work Specialisation: Also known as division of labour, this dimension involves breaking down a job into a number of steps. Each step is completed by a different individual. High specialisation leads to employees becoming very efficient at one specific task, which is a core element in structuring work.
• D. Span of Control: This dimension defines the number of subordinates a manager can efficiently and effectively direct. It determines the number of management levels and the manager-employee relationship, significantly impacting the shape (tall vs. flat) of the organisational structure.
• E. Advertising: Advertising is a specific activity, typically within the marketing function. Like marketing, it is an operational aspect rather than a core structural design element.

Identifying Primary Structural Dimensions

Based on management and organisational theory, the key elements or dimensions that managers consider when designing an organisational structure are:

• Work Specialisation: How tasks are divided.
• Departmentalisation: How jobs are grouped.
• Chain of Command: Who reports to whom (related to span of control).
• Span of Control: The number of subordinates per manager.
• Centralisation and Decentralisation: Where decision-making authority lies.
• Formalisation: The degree to which jobs within the organisation are standardised.

Comparing these with the options given:

• Departmentalisation (B) is a primary dimension.
• Work Specialisation (C) is a primary dimension.
• Span of Control (D) is a primary dimension.
• Marketing (A) and Advertising (E) are functional areas, not primary structural dimensions.

Conclusion on Correct Option

Therefore, the primary dimensions of organisational structure among the choices provided are Departmentalisation, Work Specialisation, and Span of Control.

The correct option combining these is B, C, D Only.