Answer:
Speech therapy and hearing aids may be required
Explanation:
I believe keratinocytes, so A.
The final weight/weight concentration is 1% when 1 g of active ingredient powder is mixed with 99 g of white petrolatum. Solution: 1 g (active)/ 100 g (total); 1 g,100 g=0.01; [ 0.01*100=1%. ]
