Assertion (A) : Intra cytoplasmic sperm injection (ICSI) technique is used to develop embryo in vitro.
Reason ( R): In ICSI technique, the sperm is directly injected into the ovum.

Options

A. Both assertion (A) and reason ( R) are true and reason ( R) is the correct explanation of assertion (A).
B. Both assertion (A) and reason ( R) are true but reason ( R) is not the correct explanation of assertion (A).
C. Assertion (A) is true but reason ( R) is false.
D. Assertion (A) is false but reason ( R) is true.

Explanation

To solve the question regarding the assertion and reason provided, we can break it down step by step:

### Step 1: Understand the Assertion
- The assertion states that "Intra cytoplasmic sperm injection (ICSI) technique is used to develop embryos in vitro."
- ICSI is indeed a technique used in assisted reproductive technology where embryos are developed outside the body (in vitro).

**Hint for Step 1:** Remember that ICSI is a specific method used in fertility treatments, particularly when there are issues with sperm.

### Step 2: Understand the Reason
- The reason states that "In ICSI technique, the sperm is directly injected into the ovum."
- This is a correct description of the ICSI procedure, where a single sperm is injected directly into an egg (ovum) to facilitate fertilization.

**Hint for Step 2:** Focus on the procedure of ICSI, which involves direct injection of sperm into the egg.

### Step 3: Evaluate the Relationship between Assertion and Reason
- Both the assertion and the reason are correct statements.
- The reason explains how ICSI works, which supports the assertion that ICSI is used to develop embryos in vitro.

**Hint for Step 3:** Consider how the reason provides a basis for understanding the assertion.

### Step 4: Determine the Correct Option
- Since both the assertion and the reason are correct, and the reason explains the assertion, the correct option is that both are true and the reason is a correct explanation of the assertion.

**Hint for Step 4:** Look for options that indicate both statements are true and that one explains the other.

### Final Answer
The correct option is: **Both assertion and reason are correct, and the reason is a correct explanation of the assertion.**