Explanation:

- Option 1: Earth

- Earth completes one rotation approximately every 24 hours.

- This results in a relatively average-length day compared to other planets.

- Option 2: Mars

- Mars has a day length of about 24.6 hours.

- It is similar to Earth's day but slightly longer.

- Option 3: Mercury

- Mercury rotates very slowly.

- One rotation takes about 59 Earth days.

- It is one of the longest days in the solar system.

- Option 4: Venus

- Venus has an extremely slow rotation.

- A single rotation takes about 243 Earth days.

- Its day is longer than its year.

- Correct Answer: Jupiter

- Jupiter has the shortest day.

- It completes a rotation in just about 10 hours.

- Thus, within the given options, Jupiter is not listed, but it holds the title for the shortest day in our solar system.

.