Experts please answer,.....

Dear student,
Please find below the answer:

The correct option is (2).
Enzymes present in the pancreatic juice are Trypsinogen, chymotrypsinogen, amylase, lipase, nuclease, and procarboxypeptidase. All of these are in the inactivated form. An enzyme from the small intestine called enterokinase cause activation of trypsinogen to trypsin which in turn activates all the other enzymes. 

So, we can say, it is only trypsinogen that needs enzyme from outside for activation.

Hope this information clears your doubt.

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