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The asteroid which is believed to have c...

The asteroid which is believed to have collides with earth some 65 million years ago is

A

Apollo

B

Vesta

C

Ceres

D

Gaspra.

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks for the name of the asteroid that is believed to have collided with Earth approximately 65 million years ago. This event is significant as it is associated with the mass extinction event that led to the demise of the dinosaurs. 2. **Reviewing the Options**: The options provided are Apollo, Vesta, Sirius, and Gaspara. We need to evaluate each option to determine which one is associated with the collision event. 3. **Analyzing Each Option**: - **Apollo**: This is a group of near-Earth asteroids, but it is not specifically known for the 65 million-year-old impact. - **Vesta**: This is one of the largest asteroids in the asteroid belt, but it is not linked to the extinction event. - **Sirius**: This is actually a star, not an asteroid, so it cannot be the answer. - **Gaspara**: This is the asteroid that is believed to have collided with Earth around 65 million years ago, leading to significant geological and biological changes. 4. **Selecting the Correct Answer**: After analyzing the options, we conclude that the correct answer is **Gaspara**. 5. **Final Answer**: The asteroid which is believed to have collided with Earth some 65 million years ago is **Gaspara**. ---
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