The Trojan asteroids are found: a) orbiting around the Kuiper Belt body Hector. b) beyond Neptune, with orbits similar to Pluto's. c) sixty degrees ahead or behind Jupiter, sharing its orbit about the Sun. d) with the others, between Mars and Jupiter; their red color gives them their name.

The correct option is;

c) sixty degrees ahead or behind Jupiter, sharing its orbit about the Sun.

Explanation:

The Trojan asteroids are the Jupiter trojans consists of asteroid that are on the same orbit as Jupiter while moving around the Sun. The Trojans can be located at the points Lagrange points L4 and L5, which are 60° ahead and 60°  behind Jupiter's orbit respectively.

The first Trojan asteroid to be detected was 588 Achilles by Max Wolf in 1906. At at October, the total number of the identified Trojan asteroid was  7,040.