Q.Enzymes present in Saliva, gastric juice and intestinal juice are given in the box.

Digestive enzymes act stage-by-stage as food passes through saliva, gastric juice, and intestinal juice, each secreting enzymes suited to that stage of digestion.

Note: the actual 'box' of enzyme names given on the original paper was not captured in the extracted data (no figure description or option list was captured in the source), so the exact list the student had to sort from is not available. What follows is the standard NCERT set of enzymes present in each secretion, which answers the question's intent:

• Saliva: Salivary amylase (ptyalin) — begins the digestion of starch into maltose.
• Gastric juice: Pepsin (the chief proteolytic enzyme, digests proteins into proteoses and peptones; secreted as inactive pepsinogen, activated by HCl), Gastric lipase (acts on emulsified fats), and Rennin (present in infants, helps in curdling/digestion of milk proteins). …