Identify correct decreasing order of basic strength of amines from following.

Step-by-step solution

Amine basicity in aqueous solution is governed by three competing factors: inductive effects, solvation, and steric hindrance. Alkyl groups donate electrons through the +I effect, increasing electron density on nitrogen and enhancing basicity. This would suggest the order: tertiary > secondary > primary amine. However, aqueous solvation stabilizes the conjugate acid through hydrogen bonding. Primary amines form three H-bonds ( CH ₃ NH ₃^+ ), secondary amines two ( ( CH ₃)₂ NH ₂^+ ), and tertiary amines only one ( (