Overall company objectives should:

a. be specific.
b. focus on returning some profit to the business.
c. be realistic and achievable.
d. be compatible with one another.
e. all of the above.

To determine the correct answer, let's break down each option:

a. Specific objectives: Company objectives should be clear and well-defined to provide guidance and direction to the organization. This helps in aligning efforts and resources towards a common goal.

b. Profit-focused objectives: A company's purpose is often to generate profit or financial returns. Therefore, it is important for the objectives to include a focus on returning some profit to the business. This ensures sustainability and growth.

c. Realistic and achievable objectives: It is crucial for the company objectives to be realistic and attainable. Setting overly ambitious or unachievable goals can lead to demotivation and failure. Objectives should consider the available resources, market conditions, and the organization's capabilities.

d. Compatibility of objectives: Company objectives should be harmonious and compatible with one another. This means that they should align and support each other rather than contradict or compete with one another. Compatibility enhances coordination and cooperation within the organization.

Considering the explanations above, the answer is e. all of the above. Overall company objectives should be specific, profit-focused, realistic and achievable, and compatible with one another.