which kind of body has a nucleus, coma, and tail?\ncomets\nasteroids\nmeteors\nstars

Brief Explanations:

Comets are known to have a solid nucleus, a fuzzy coma surrounding the nucleus, and a tail that forms when they are close to the Sun due to solar radiation and solar wind. Asteroids are rocky bodies without a coma and tail. Meteors are the streaks of light seen when a meteoroid enters Earth's atmosphere and burns up, not having a nucleus - coma - tail structure. Stars are massive, luminous spheres of plasma and do not have these features.

Answer:

A. comets