Literal question
<svar a="all" v="CO05A040">2. What is the predominant material of the exterior walls? (expanded)<br /><div class="i1">[] 1 Cement block, brick, stone, finished wood<br />[] 2 Clay brick, adobe, cane/mud<br />[] 3 Rough wood, boards, plywood</div><br /><br /><span class="pg">[p. 7]</span><br /><br /><div class="i1">[] 4 Prefabricated material<br />[] 5 Bamboo, cane, thatch<br />[] 6 Zinc, fabric, cardboard, cans, discarded materials, plastics<br />[] 7 Without walls</div><br /></svar>