Synergids are

Options

A. haploid
B. diploid
C. triploid
D. tetraploid

Explanation

### Step-by-Step Solution:

1. **Understanding the Structure of the Embryo Sac**:
- The embryo sac is a crucial structure in angiosperms (flowering plants) that contains the female gametophyte.
- It consists of several types of cells, including synergids, antipodal cells, and the egg cell.

2. **Identifying the Location of Synergids**:
- Synergids are located at the micropylar end of the embryo sac, adjacent to the egg cell.
- There are typically two synergid cells present.

3. **Role of Synergids**:
- Synergids play an essential role in the process of fertilization.
- They assist in guiding the pollen tube towards the egg cell, facilitating the fusion of male and female gametes.

4. **Determining the Ploidy Level of Synergids**:
- Synergids are formed from the mother gametophyte through the process of meiosis.
- Since they are derived from a haploid structure (the female gametophyte), synergids themselves are haploid.

5. **Conclusion**:
- Based on the information gathered, the correct answer to the question "Synergids are" is that they are **haploid**.

### Final Answer:
- **Synergids are haploid (Option A)**.

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