To prevent infants and young children from choking a. give them a knife to cut their food b. chew their food for them c. cut their food into bite size pieces

The answer is C. cut their food into bite sized pieces.

If you gave them a knife, that would be an obvious hazard, and chewing food for a child is unsanitary and impractical. Cutting their food into safe, small pieces is the solution to keeping them from choking.

she forgets to repeat her message as often as necessary