How would the heterocyclic amines shown here be ranked in order of decreasing basicity (more basic less basic)?

Question

How would the heterocyclic amines shown here be ranked in order of decreasing basicity (more basic > less basic)?

Quizplus · Accepted Answer

The basicity of a compound is related to its ability to donate a lone pair of electrons. Compounds with more electron-donating groups or more electronegative atoms tend to be more basic. In this case, compound III has the highest basicity because it has two nitrogen atoms, both of which can donate lone pairs of electrons. Compound II has only one nitrogen atom and a carbonyl group, which withdraws electron density, making it less basic than III. Compound I has the lowest basicity because it only has one nitrogen atom and two carbonyl groups, which both withdraw electron density. Therefore, the ranking of decreasing basicity is II > III > I.

How Would the Heterocyclic Amines Shown Here Be Ranked in Order