Answer:
A. The thesis statement doesn't take a stance on the topic.
Step-by-step explanation:
This statement is a generalization and doesn't express a clear stance or argument. It doesn't specify what the author means by "diverse" and doesn't indicate how the author plans to prove that a diverse office environment is the best. A more specific and argumentative thesis statement would be something like "A diverse office environment leads to increased creativity and productivity, and therefore should be a priority for companies in the 21st century."