Out of the given compounds, the number of compounds are weaker acids than benzoic acid are $\qquad$

Attached electron withdrawing groups increase the acidity of benzoic acid by $-/$ and $-M$-effect (whenever applicable) whereas electron releasing groups decrease the acidity of benzoic acid.
even though they have electron releasing groups (i.e. $\mathrm{OCH}_3$ ) attached.
one electron withdrawing group is attached, due to this reason it is more acidic than benzoic acid. Moreover, aliphatic carboxylic acid is a weaker acid than aromatic carboxylic acid because benzene itself is electron withdrawing in nature that makes the release of proton from - COOH easy. Therefore, acids which are weaker than