Option A is the correct answer.

A. An embarrassing mistake → I. A Faux pas
A faux pas is a social blunder or mistake, especially one that is embarrassing.

B. Like a weak old woman → II. Anile
Anile means resembling a doddering old woman.

C. Song in praise of God → III. Hymn
A hymn is a religious song or poem of praise to God.

D. Murder of wife → IV. Uxoricide
Uxoricide means the act of killing one's wife.