Microsoft has multiple desktop operating systems, with modified versions for their Microsoft Surface Pro tablet series and cell phones. Microsoft’s wide range of operating system software is an example of a company applying:a. marketing mix
b. product life cycle
c. product portfolio management

Microsoft’s wide range of operating system software is an example of a company applying option c) product portfolio management

Explanation:

Product Portfolio Management is a practice designed to manage all aspects of the products a company sells.

This involves evaluating their performance, identifying risks and opportunities, prioritizing high-value products, optimizing resource allocation across the portfolio and balancing the product mix among strategic buckets.

Done right, this practice aligns the product portfolio with business strategies to achieve target revenue and profitability.

Product Portfolio Management strategies allows Microsoft to constantly update their operating systems according to changing market conditions, competitive threats, regulatory requirement and resource capacity with modified versions for their Microsoft Surface Pro tablet series and cell phones. This helps maximize return on investment.