Final answer:
A compound that gains two electrons is reduced and acts as an oxidizing agent because it causes another substance to lose electrons. Reducing agents donate electrons and get oxidized in the process. The concept of a 'double reducing agent' does not exist in chemistry.
Step-by-step explanation:
When a compound gains two electrons, it is considered to be reduced. During this process, the compound serves as an oxidizing agent because it causes another substance to lose electrons; therefore, the correct answer is that the compound is an oxidizing agent.
Understanding the concepts of oxidation and reduction (redox reactions) is crucial in chemistry. Oxidation is defined as the loss of electrons, a gain of oxygen, or a loss of hydrogen. Conversely, reduction refers to the gain of electrons, loss of oxygen, or gain of hydrogen.