Which of the following is a black hardwood?

Ebony is a dense black/brown hardwood, most commonly yielded by several species in the genus Diospyros, which also contains the persimmons. Ebony is dense enough to sink in water. It is finely-textured and has a mirror finish when polished, making it valuable as an ornamental wood. The word ebony comes from the Ancient Egyptian hbny, through the Ancient Greek ἔβενος (ébenos), into Latin and Middle English.

Modern uses are largely restricted to small items, such as crucifixes, and musical instrument parts, including black piano, Organ (music), and harpsichord keys, violin, viola, mandolin, guitar, double bass, and cello fingerboards, tailpieces, tuning pegs, chinrests, and bow frogs. Many plectrums, or guitar picks, are made from ebony.

Traditionally, the black pieces in chess sets were made from ebony, with boxwood or ivory being used for the white pieces. Modern East Midlands-style lace-making bobbins, also being small, are often made of ebony and look particularly decorative when bound with brass or silver wire. Due to its strength, many handgun grips and rifle fore-end tips are made of ebony, as are the butts of pool cues.