Which of these is a female singing voice whose vocal range is the lowest female voice type?

A contralto is a type of classical female singing voice whose vocal range is the lowest female voice type.

The contralto's vocal range is fairly rare; similar to the mezzo-soprano, and almost identical to that of a countertenor, typically between the F below middle C (F3 in scientific pitch notation) to the second F above middle C (F5), although, at the extremes, some voices can reach the D below middle C (D3) or the second B♭ above middle C (B♭5). The contralto voice type is generally divided into the coloratura, lyric, and dramatic contralto.

"Contralto" is primarily meaningful only in reference to classical and operatic singing, as other traditions lack a comparable system of vocal categorization. The term "contralto" is only applied to female singers; men singing in a similar range are called "countertenors". The Italian terms "contralto" and "alto" are not synonymous, "alto" technically denoting a specific vocal range in choral singing without regard to factors like tessitura, vocal timbre, vocal facility, and vocal weight; However, there exists some French choral writing (including that of Ravel and Poulenc) with a part labeled "contralto", despite the tessitura and function being that of a classical alto part. The Saracen princess Clorinde in André Campra's 1702 opera Tancréde was written for Julie d'Aubigny and is considered the earliest major role for bas-dessus or contralto voice.