How to modify quiz/exercise layout to two-column format

[teomcam]

I'm trying to modify the quiz/exercise layout in Chamilo to display in a two-column format, where:

Left column: Question text/reading passage
Right column: Answer options/choices

I've already located several template files but I'm not sure which is the correct one to edit:

Could someone please help me identify:

Which specific template file controls the quiz/exercise layout?