The correct option is D Nurture
Option D)nurture is correct as it means care for and protect (someone or something) while they are growing and best suits the given sentence. The other options are wrong as beat, criticize, and furnish mean strike (a person or an animal) repeatedly and violently so as to hurt or injure them, typically with an implement such as a club or whip, indicate the faults of (someone or something) in a disapproving way, and provide (a house or room) with furniture and fittings respectively. The correct answer is D)nurture.