When a novel behavior is being taught it is best to use prompts, and when you want a person to make a correct discrimination prompts are best.

more intrusive, less intrusive

Explanation:

A novel behavior can be described or explained as a behavior that an individual would not have initially engaged in, while engaging in the targeted behavior. This means that the behavior is new and not resembling the one that has been used or known before.

It should be noted that this kind of behavior can be emotional or aggressive.

This means that , when the behavior is emotional , it is known to be less intrusive, while , when it is aggressive , it is known to be intrusive.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;