Final answer:
Iron(III) ions (Fe³⁺) can oxidize lead (Pb) because they are above lead in the activity series. Cu²⁺, Zn²⁺, and Sn²⁺ cannot oxidize Pb as they are positioned below lead in the activity series.
Step-by-step explanation:
To determine which metal or metal ion can oxidize lead (Pb), we need to consult an activity series or electrochemical series, which ranks metals by their ability to be oxidized (lose electrons). In such a series, a metal can be oxidized by a metal ion or species that is above it in the series. Among the given options, we look for the one that is above lead in the activity series.
Option c) Fe³⁺ represents iron(III) ions which are known to have a higher potential to oxidize other metals compared to lead. Therefore, Fe³⁺ ions can oxidize lead (Pb) making it the right choice. Copper (Cu²⁺), zinc (Zn²⁺), and tin (Sn²⁺) are below lead in the activity series, so they cannot oxidize Pb.