Respuesta :
Answer: C. The y-intercept means the concentration will remain 30% if no solution is added. <-- on edgen2020
Explanation: The first person who answered is correct! I'm attaching a screenshot of my quiz with this- Good luck everyone! :)

Answer:
C. The y-intercept means the concentration will remain 30% if no solution is added.
Step-by-step explanation:
edge2022