[单选题]
1. How is reliability esta n09 i jv,(ue-k+wyaoob8u hr.awd -a9blishe b*5kyy:l e*jb5unx,td in an enzyme experiment?
A. Quantitative measurements with sufficient replicates.
B. Testing the enzyme at pH levels from 4 to 11.
C. Testing the enzyme at various temperatures.
D. Collecting large amounts of qualitative data.