Which of the following is true of matrix organizations?

Comprehensive and Detailed In-Depth Explanation:

A matrix organization combines functional and product-based structures, allowing employees to work across multiple departments and report to multiple managers. This enables businesses to utilize expertise from various areas efficiently.

Option A (Unity of command) does not apply to matrix organizations, as employees often report to multiple supervisors.

Option C (Variable authority and accountability) is a secondary characteristic but does not define matrix structures.

Option D (Best for scattered locations/multi-line firms) applies more to divisional rather than matrix structures.

Thus, the correct answer is B, as matrix structures enable collaboration across functional and product teams.