Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Daniel Martín -  Daniel Martín Alexandre commonly known as Dani (born 16 September 1981) is a Spanish retired footballer who played as a striker.His career was closely associated to Betis for which he appeared in 115 official games (26 goals) and won one Copa del Rey.
The answer to this question is:
Athlete