A developer has an isDeg function that takes one argument, pts.

setInterval(fn, delay, arg1, arg2, ...) calls fn every delay ms, passing extra arguments.

To call isDeg every 60 seconds with " cat " :

setInterval(isDeg, 60000, ' cat ' );

Why others are wrong:

A/D: isDeg( ' cat ' ) is called immediately, and its return value is scheduled, not the function.

C: setTimeout runs once after 60 seconds, not repeatedly.