Class Crustacea have following features.

Options

A. cephalothorax , book lungs, chitinous exoskeleton
B. head and thorax, biramous appendages, book lungs
C. head and thorax , book lungs , chitinous exoskeleton
D. cephalothorax, biramous appendages , gills

Explanation

To solve the question regarding the features of the class Crustacea, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Class**: Understand that we are discussing the class Crustacea, which includes various aquatic organisms such as crabs, lobsters, and shrimp.

2. **Body Structure**: Recognize that the body of crustaceans is divided into two main parts: the cephalothorax (which combines the head and thorax) and the abdomen. This is a key feature of crustaceans.

3. **Respiratory Structures**: Note that crustaceans breathe through gills, which are specialized for gas exchange in aquatic environments. This is an important characteristic that distinguishes them from other classes.

4. **Appendages**: Understand that crustaceans have biramous appendages. This means their limbs are jointed and consist of two branches, which is a unique feature of this class.

5. **Evaluate Options**: Now, we will evaluate the given options based on the features we have identified:
- **Option A**: Cephalothorax, book lungs, chitinous exoskeleton. This is incorrect because crustaceans do not have book lungs.
- **Option B**: Head and thorax, biramous appendages, and book lungs. This is incorrect as crustaceans lack book lungs and have a cephalothorax instead of a distinct head and thorax.
- **Option C**: Head and thorax, book lungs, and cutaneous exoskeleton. This is incorrect for the same reasons as above.
- **Option D**: Cephalothorax, biramous appendages, and gills. This is correct as it accurately describes the features of crustaceans.

6. **Conclusion**: Based on the analysis, the correct answer is **Option D**: Cephalothorax, biramous appendages, and gills.