Answer the following question given this paragraph: 

Comets are small, icy objects that orbit the Sun in very elliptical orbits. When they are close to the Sun, they form comas and tails, which glow and make the comet more visible.


Q: What types of orbits do comets usually have?

 Choices:

- vertical

- convex

- spectral

- elliptical

A:
elliptical
