Final answer:
Sandra's gallery and art school represent an example of related diversification.
Step-by-step explanation:
True,
Sandra's gallery and art school represent an example of related diversification.
Related diversification occurs when a company expands its operations into new industries or markets that are related to its existing business.
In this case, Sandra's gallery and art school are both related to the art industry, allowing her to reach different customer segments and generate additional revenue streams.