Which of the following electrodes will have maximum positive value of potential?

electrode $E^{\mathrm{c}}\left({\mathrm{F}}^{-}\left|{\mathrm{F}}_2\right|\mathrm{Pt}\right)$ will have maximum positive value of potential.

"Potential difference set up between electrode and electrolyte of same beaker" is how electrode potential is defined. There are two types: Potential for reduction: The propensity for a solution to be decreased. An electrode's propensity to oxidise is known as its oxidation potential.

Hence, correct option is A.