Analyzing each reaction for alcohol production:
Reaction A: CH4+O2Mo2O3,Δ produces formaldehyde, not alcohol.
Reaction B: 2CH3CH3+3O2(CH3COO)2Mn,Δ produces acetic acid, not alcohol.
Reaction C: (CH3)3CHKMnO4 tert-butyl compound undergoes oxidation to produce tert-butyl alcohol as the primary product.
Reaction D: 2CH4+O2Cu/523K/100atm produces methanol (CH₃OH), a primary alcohol.
Reaction E: The diene compound with KMnO4/H+ produces vicinal diol, which is technically an alcohol but not a simple monoalcohol.
The reactions that predominantly produce alcohols as main products are C and D.