Step 1: Understanding the question.
The question asks which planet in the Solar System is most similar in size to Earth. When comparing the planets, the one closest in size to Earth is Venus, with a similar radius and mass.
Step 2: Analyzing the options.
(A) Mercury: Mercury is much smaller than Earth, with only about 38% of Earth's radius.
(B) Venus: Venus is nearly the same size as Earth, with only a slight difference in radius and mass.
(C) Neptune: Neptune is much larger than Earth, with a much greater size and mass.
(D) Uranus: Uranus is also larger than Earth, with a significantly greater radius.
Step 3: Conclusion.
The correct answer is (B) Venus because it is the planet most similar in size to Earth.
| Group I | Group II | ||
| P | Iceland | 1 | Subduction Zone |
| Q | Indonesia | 2 | Transform Fault |
| R | Nepal | 3 | Mid-Oceanic Ridge |
| S | New Zealand | 4 | Continental Collision |