If the Hide option is inactive or grayed out, most likely, the current workbook has only one worksheet.
Ọ bụrụ na nhọrọ Zoo anaghị arụ ọrụ ma ọ bụ na-arụ ọrụ, ọ ga-abụ na akwụkwọ ọrụ ugbu a nwere naanị otu akwụkwọ.