Which planet is called a terrestrial planet of the Solar System?

The correct answer is Option (4) → Venus

Terrestrial planets are the four inner planets, which are small and made mostly of rock and metal with solid surfaces, like the Earth (Latin terra). The planets of the Solar System fall into two groups:

• Terrestrial (inner) planets — Mercury, Venus, Earth, Mars

• Jovian (outer, giant) planets — Jupiter, Saturn, Uranus, Neptune, large and made mostly of gases and ices

Venus is the only terrestrial planet among the options; Neptune, Uranus and Saturn are giant planets.