In case of acidic buffer solution the concentration of conjugate base is prominently supplied by

Explanation

An acidic buffer solution is composed of a weak acid and its conjugate base, often supplied by a salt of the acid. This salt dissociates in solution to provide the conjugate base, which is crucial for buffering capacity. For example, in a solution of acetic acid and sodium acetate, the sodium acetate dissociates to supply acetate ions (the conjugate base). This helps the buffer resist changes in pH when small amounts of acid or base are added.The other options are incorrect because:Acid: While an acid is part of the buffer, it provides hydrogen ions rather than the conjugate base.Base: A base is not typically used to provide the conjugate base in an acidic buffer system.Solvent: The solvent does not contribute to the buffer's ability to neutralize added acids or bases.