Sentence 2 helps us to identify the type of enzyme.
- Amylase breaks starch into glucose
- Lipase breaks lipids into fatty acids and glycerol
- Proteases breaks proteins into amino acids
Hence, the enzyme is protease. This rules out options A, B, C and D.
Sentence 1 helps us to know that pH is acidic. We know that the stomach secrets hydrochloric acid. Therefore, the answer is F ‘protease from the stomach’