Question: Amaningi amadwala emvelo ashintsha umbala ngokuhamba kwesikhathi.  Ngokwesibonelo, e-Utah, insimbi yathomba futhi yakha idwala elibomvu, elinombala we-orintshi, neliphuzi. Yikuphi kokulandelayo okuyimbangela yalolu shintsho?
Options:
ukuwohloka okudalwa ngamakhemikhali
wukuwohloka oku-mechanical
ukuguguleka okudalwa ngamanzi
ukuguguleka okudalwa wumoya
Answer: A