Answer:
C
Explanation:
In answer A, if Michael is building the shed from the sustainable forestry techniques, it is still cutting down trees. In answer B, to reuse wood from old construction sites, could be useful but at the same time could be dangerous because the wood could have been damaged, meaning the shed could collapse during or after construction meaning you have to start all over again. In answer D, that is the worst answer, because the forest has stood for a long time and Michael would be supporting cutting down old-growth forests. Answer C would be the safest and most sustainable alternative.
please mark me brainliest!