[A]: Triple fusion results in veg~tative fertiliza- tion of angiosperms.
[R]: It combines one male gamete with two synergids.

Options

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

Answer

To analyze the assertion and reason provided in the question, we will break down the concepts of triple fusion, vegetative fertilization, and the roles of gametes in angiosperms.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Triple fusion results in vegetative fertilization of angiosperms."
- **Explanation**: Triple fusion refers to a specific process in the fertilization of angiosperms where one male gamete fuses with two polar nuclei to form the endosperm. This process is part of double fertilization, not vegetative fertilization.

2. **Understanding the Reason**:
- The reason states that "It combines one male gamete with two synergids."
- **Explanation**: This statement is incorrect. In the process of fertilization, one male gamete fuses with the egg cell, while the second male gamete fuses with the two polar nuclei (not synergids) to form the endosperm. Synergids play a supportive role but do not participate in the formation of the endosperm.

3. **Evaluating the Relationship Between Assertion and Reason**:
- Since the assertion is incorrect (triple fusion does not result in vegetative fertilization) and the reason is also incorrect (it does not involve synergids), both statements are false.

4. **Conclusion**:
- Therefore, the correct answer is that both the assertion and the reason are false.

### Final Answer:
- The correct option is: **Option 4: Both assertion and reason are false.**