Answer:
The production of the digestive enzymes will be affected by the mutation.
Step-by-step explanation:
As the coding sequence for the digestive enzyme has been changed from ATGTT region to ATATT, it will affect the production of the digestive enzyme. As the coding sequence for muscle protein i.e TACT has not been changed after mutation, hence it will continue to produce the muscle protein normally and the mutation will not have any effect on this protein.
This kind of mutation in which one of the bases gets changed is known as a substitution mutation.