The correct option is
A Hydroxytoluenes
Cresols are hydroxy toluenes.
Hence option (a) is correct.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1098651/original_Dia_23.7.png)
There are three cresol depending on whether the -OH is in the ortho, meta and para positions to methyl group i.e. o-cresol, m-cresol, p-cresol.
Common Names of Derivatives of Alcohols and Phenols
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1102405/original_8%2826-4-21%29.png)