Listen if you have to cheat for the dba thing not worth even doing that dba tbh this is very easy as I just did it in like 5 minutes it gives you everything you need even the formulas so use your f .u .c .k. 1 .n g brain you monkey...
Of the materials listed wood is the best insulator. It would be the least hot if exposed to similar temperatures.
Answer:
the image is behind the mirror
virtual
erect(not inverted)
larger than the object