Shifts in eye contact, slight head movements, posture changes, and nodding to tell another person when to finish what he or she is saying are all examples of nonverbal behaviors .

TRUE

Explanation:

Shifts in eye contact, slight head movements, posture changes, and nodding to tell another person when to finish what he or she is saying are all examples of nonverbal behaviors. Non verbal behaviors are means of communication/transmission of information  such as eye contact, facial expressions, gestures, posture, and the distance between two individuals and they are mostly effective when speaking is not very much neccessary or if the place is not conducive enough for a proper verbal discussion.

the answer would be c. sediment buildup on continental slope

                                                                                -hope this -