Wearing gloves at all time, facemask when needed, washing hands before and after seeing each patient.
Absorbance =

100÷%T
A=

2.105 <=>
<=> A=0.3233
To 47.5%T corresponds 0.3233 absorbance.
2000 calories a day soo..you welcome
I could be wrong but I do believe that the answer you are searching for is A: A high-fat diet.