Concept:Group VII elements are halogens, which are electronegative and tend to gain electrons.Explanation:Halogens have seven valence electrons and readily gain one electron to form a stable noble gas configuration.Therefore, they act as good oxidizing agents because they accept electrons from other substances.They are not monoatomic; they exist as diatomic molecules like F2 and Cl2.They are highly electronegative, not electropositive, and they are electron acceptors, not electron donors.Answer:B. good oxidizing agents