Answer:
b. changing the compound changes the absorbance behavior.
Step-by-step explanation:
- Option a) would be akin to modifying the path length, b.
- Option b) would involve using a different solute, as such, there would be another molar absortivity, ε.
- Option c) would decrease the concentration (c) of the solute, which would explain why the absorbance would decrease as well.