Ответ:

  1. C) Venus — Venus is the brightest planet in the night sky.
  2. C) Jupiter — Jupiter is generally considered to have formed first among the planets.
  3. B) 8 — The Solar System has eight planets.
  4. D) 2 — Mars has two moons, Phobos and Deimos.
  5. A) Mercury — Mercury is the smallest planet.
  6. A) Mercury — Mercury is the closest planet to the Sun.
  7. A) Saturn — Saturn has the most confirmed moons among the listed planets.