Main statement: \( \mathrm{Use} \rightarrow \mathrm{Dream} \).
Option AD: first A (\( \neg \mathrm{Dream} \)), second D (\( \neg \mathrm{Use} \)).
The contrapositive of the main statement is \( \neg \mathrm{Dream} \rightarrow \neg \mathrm{Use} \). Therefore, A implies D.
Both are consistent: \( \neg \mathrm{Dream} \) and \( \neg \mathrm{Use} \) together do not contradict \( \mathrm{Use} \rightarrow \mathrm{Dream} \).
Other options:
- DC fails because \( \neg \mathrm{Use} \) does not imply \( \mathrm{Dream} \).
- CB fails because \( \mathrm{Dream} \) does not imply \( \mathrm{Use} \).
- DA fails because \( \neg \mathrm{Use} \) does not imply \( \neg \mathrm{Dream} \).