Efficacy means “capacity for producing a desired result or effect” so i believe the answer would be D.
hope this helps!!
Answer:
It seems fairest to young people like teens I do agree with you on that since Power can be abusive especially to teens and pre-teens. We don't know what to do or how to say NO! Maybe the next generation will figure it out.
During childhood, under-nutrition causes children to have less energy and less interest for learning, which negatively influences cognitive development and academic performance. ... Evidence suggests that the timing of nutritional deficiencies can also significantly affect growth and development.
Just answer if you have a credit card, or if you are of age to get one :/