Answer:
differential stain
Explanation:
Differential stain -
It refers to the process of staining , which comprises of more than one chemical stain , is referred to as differential staining .
Multiple stains enables better differentiation between the microorganisms .
Gram stain is also an example of differential stain , as it uses two stains for testing process .
Hence , from the given information of the question ,
The correct answer is differential stain .