Carlson notices that a friend is acting different than usual and the friend does not seem to realize that her behavior is odd. this makes carlson feel concerned. carlson's friend may be experiencing

The person is likely to experience change. In which the individual or something is likely to become more different than previously and Carlson’s friend may have change without his friend noticing it and Carlson find his friend’s change to be evident.

moves its body by bending from side to side. hope this