MCQOPTIONS
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				| 1. | 
                                    For most American adults, an invisible spatial envelopedefining their most intimate space | 
                            
| A. | extends four feet from their body. | 
| B. | extends an "arm\s reach" from their body. | 
| C. | is reserved for comfortable interactions with friends. | 
| D. | extends about 18 inches out from their body. | 
| Answer» D. extends about 18 inches out from their body. | |