Identify the principle suggesting to avoid protection and deprotection of selective group for organic reactions in green chemistry.

Reduce derivatives is the principle that advocates avoiding protection and deprotection of selective groups. This principle minimizes unnecessary derivatization steps, which often require additional reagents and generate waste.

The alternatives do not address this concept: use of renewable feed stock concerns raw material sustainability, design for energy efficiency focuses on energy minimization, and designing safer chemicals emphasizes toxicity reduction.

The correct choice is $\boxed{A}$.