The correct answer is 500mg.
First convert the ratio strength to a percentage(0.2%).
Drug X accounts for 0.0396 g of NaCl.
It would require 0.54 g of NaCl if that was all we were using.
Lastly, 0.54 g - 0.0396 = ~ 0.5 g NaCl ( or 500 mg, rounded as per the instructions ).
The answer should be “small amounts”
Break down food
Absorve the nutrients
Take in the food
I would say it's B because you dress how you want to be seen. What you read has nothing to do with your gender identity and neither does your job or sports