A reseаrcher аims tо design а bоne scaffоld that degrades at a controlled rate while promoting new tissue formation. Which generation of biomaterials best aligns with this goal, and why?A) First generation, because bioinertness prevents immune rejection and ensures long-term stability.B) Second generation, because bioactivity encourages direct chemical bonding with surrounding bone.C) Third generation, because regeneration of functional tissue requires temporary scaffolding and signaling.D) First generation, because inert materials avoid adverse degradation byproducts in orthopedic sites.