Assertion :-Fossils are always remains of hard parts of life-forms found only in rocks.
Reason :-Rocks are formed due to sediments.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To analyze the given assertion and reason, let's break down the statements step by step.

### Step 1: Evaluate the Assertion
**Assertion:** "Fossils are always remains of hard parts of life-forms found only in rocks."

- Fossils are indeed often the remains of hard parts of organisms, such as bones, teeth, and shells. However, this assertion is misleading because fossils can also be found in other materials, not just rocks. For example, fossils can be preserved in amber or ice. Therefore, the assertion is **false**.

### Step 2: Evaluate the Reason
**Reason:** "Rocks are formed due to sediments."

- This statement is partially true. While sedimentary rocks are formed from sediments, rocks can also be formed through other processes, such as igneous and metamorphic processes. Therefore, this reason is also **false**.

### Step 3: Conclusion
Since both the assertion and the reason are false, we can conclude that the correct answer is that both the assertion and reason are false.

### Final Answer
Both the assertion and the reason are false.

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