Final answer:
President Obama's executive action to prohibit discrimination against transgender employees was an executive order.
Step-by-step explanation:
The subject of this question pertains to the executive actions taken by President Obama to protect transgender employees from discrimination within federal agencies and contractors. In this case, the specific action mentioned is when President Obama prohibited federal agencies and contractors from discriminating against transgender employees. This action is known as an executive order, which is a directive issued by the President to manage operations of the federal government.
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