Which type of concepts tend to rely on everyday perceptions rather than strict classification?

The symptoms of borderline personality disorder include all except:

a) disregard for the basic rights of others. b) unstable relationships. c) unstable sense of self. d) impulsive and/or self-destructive behaviors.

If Sally can grasp with her thumb and fingers, she is likely to be at least ________ months old

a) 6 b) 8 c) 11 d) 15