Given below are four statements (A–D ) each with one or two blanks. Select the option which correctly fills up the blanks.
Statements :
(A) Miller and Urey while creating probable conditions on the primitive earth in the laboratory used mixture of methane, water vapour , hydrogen , and ........(i)......
(B) Information of extinct organisms can be obtained by the help of ....(i) .... evidence which can be very easily isolated from ....(ii) .... types of rocks .
(C) Darwin selection can be concluded with the introduction of ...(i)... in organisms .
(D) Natural selection can be concluded with the introduction of ........(i).......in organisms.

Options

A. Statement A-i Ammonia , statement B – i : Anatomical evidences
B. Statement C – I : Convergent evolution , statement D–i: Reproductive fitness
C. Statement B - ii: Sedimentary rocks , Statement D -i: Reproductive fitness
D. Statement B – ii : Metamorphic rocks , statement A–i: Ammonia

Answer

To solve the question, we will fill in the blanks for each statement (A-D) based on the information provided.

### Step-by-Step Solution:

**Statement A:**
Miller and Urey while creating probable conditions on the primitive earth in the laboratory used a mixture of methane, water vapour, hydrogen, and **(i) ammonia**.
- **Explanation:** Miller and Urey's experiment aimed to simulate the conditions of early Earth and they included ammonia (NH3) in their gas mixture.

**Statement B:**
Information of extinct organisms can be obtained by the help of **(i) anatomical evidence** which can be very easily isolated from **(ii) sedimentary** types of rocks.
- **Explanation:** Anatomical evidence refers to the physical structures of organisms, which can be studied through fossils found in sedimentary rocks, where such fossils are typically preserved.

**Statement C:**
Darwin's selection can be concluded with the introduction of **(i) convergent evolution** in organisms.
- **Explanation:** Convergent evolution describes how different species can evolve similar traits independently, which is a concept related to natural selection.

**Statement D:**
Natural selection can be concluded with the introduction of **(i) reproductive fitness** in organisms.
- **Explanation:** Reproductive fitness refers to the ability of an organism to survive and reproduce, which is a key concept in natural selection.

### Final Answers:
- A: ammonia
- B1: anatomical evidence
- B2: sedimentary
- C1: convergent evolution
- D1: reproductive fitness