the formation of a chemical bond almost always \na releases energy\nb requires energy\nc is endothermic\nd…

Brief Explanations:

When a chemical bond forms, atoms move from a higher - energy state to a lower - energy state. This transition releases energy. Endothermic processes require energy input. Since bond - formation is an exothermic process (releases energy), not endothermic (requires energy) and it does involve energy.

Answer:

A. releases energy