Following features belong to which syndrome ?
(I) Furrowed tongue
(II) palm is broad with characteristics palm crease .
(III) Physical and mental retardation
(IV) Short statured with small round head.

Options

A. Down's syndrome
B. Turner's
C. Klinefeter's syndrome
D. Cri du chat syndrome

Answer

To solve the question regarding the features of a specific syndrome, we will analyze the given characteristics step by step.

### Step-by-Step Solution:

1. **Identify the Features**:
- The features mentioned in the question are:
- (I) Furrowed tongue
- (II) Broad palm with characteristic palm crease
- (III) Physical and mental retardation
- (IV) Short stature with a small round head

2. **Analyze Each Feature**:
- **Furrowed Tongue**: This is a common physical characteristic seen in Down syndrome.
- **Broad Palm with Characteristic Palm Crease**: Individuals with Down syndrome often have a single transverse palmar crease, which is a distinctive feature.
- **Physical and Mental Retardation**: Down syndrome is associated with varying degrees of intellectual disability and developmental delays.
- **Short Stature with Small Round Head**: People with Down syndrome typically have a shorter stature and a rounder head shape.

3. **Match Features to Syndromes**:
- **Down Syndrome**:
- All the features listed align with Down syndrome, which is caused by an extra copy of chromosome 21 (trisomy 21).
- **Turner Syndrome**: Typically involves females with a missing X chromosome and does not match the features.
- **Klinefelter Syndrome**: Involves males with an extra X chromosome and does not match the features.
- **Cri du Chat Syndrome**: Characterized by a distinct cry and other features, but does not match the listed symptoms.

4. **Conclusion**:
- Based on the analysis, the features belong to **Down Syndrome**.

### Final Answer:
The features belong to **Down Syndrome**.