B. Distillation
Distilling is when you boil a substance and collect the vapors.
The correct angle between the atones in a tetrahedral molecule would be B. 109 degrees.
I believe the correct answer from the choices listed above is the last option. Lactase and carbonic anhydrase are examples of enzymes. Lactase is an enzyme produced by a lot of organisms. Carbonic anhydrases, on the other hand, is a family of enzymes that catalyze the rapid interconversion of CO2 and H2O to bicarbonate.
