Answer:
Earth revolves around the sun once every 365.24 tropical days, or once every 365.26 sidereal days.
A tropical day is the average time for the Earth to revolve about its axis relative to the sun. A sidereal day is the average time it takes for the Earth to revolve about its axis relative to a far distant star. The difference lies in the fact that the Earth is rotating about its axis at the same time it is orbiting around the Sun.