Answer: c) Interstitial
Step-by-step explanation:
Interstitial area in terms of Thrasher's concept is defined as the region that is generated through spacing or crack occurring in the bond or link present between he society to assemble components. This split leads to formation of deviating community in social field, economical field etc.
Other options are incorrect because extraterrestrial areas, geographical void space and spacial elliptical areas do not create deviant group through split created in bond of society.Thus,the correct option is option(c).