The standard reduction potentials at 298K for the following half reactions are given against each\[Z{{n}^{2+}}(aq)+2{{e}^{-}}\rightleftharpoons Zn(s);\,\,-0.762\,V\]\[C{{r}^{3+}}(aq)+3{{e}^{-}}~\rightleftharpoons Cr(s);\,\,-0.740\,V\]\[2{{H}^{+}}(aq)+2{{e}^{-}}\rightleftharpoons {{H}_{2}}(g);\,\,\,0.00\,V\]\[F{{e}^{3+}}(aq)+2{{e}^{-}}\rightleftharpoons F{{e}^{2+}}(aq);\,\,0.770\,V\]Which is the strongest reducing agent?

• A. \[Zn\left( s \right)\]                      
• B. \[Cr\left( s \right)\]
• C. \[{{H}_{2}}\left( g \right)\]                     
• D. \[F{{e}^{3+}}(aq)\]