Which of the following is a heterocyclic alicyclic compound ?

Options

A.
B.
C.
D.

Explanation

To determine which of the given compounds is a heterocyclic alicyclic compound, we need to understand the definitions of these terms:

1. **Alicyclic Compounds**: These are compounds that contain a ring structure (cyclic) but do not contain aromatic characteristics. They can be made up of carbon atoms only or can include other atoms.

2. **Heterocyclic Compounds**: These are a subset of alicyclic compounds that contain at least one atom in the ring that is not carbon. This could be an oxygen, nitrogen, sulfur, etc.

Now, let's analyze the options provided:

### Step 1: Identify the Compounds
- **Option A**: All carbon atoms in the ring.
- **Option B**: All carbon atoms in the ring.
- **Option C**: Contains oxygen in the ring.
- **Option D**: All carbon atoms in the ring.

### Step 2: Analyze Each Option
- **Option A**: Since it contains only carbon atoms, it is not heterocyclic.
- **Option B**: Similarly, it contains only carbon atoms, so it is not heterocyclic.
- **Option C**: This option contains oxygen in the ring. Since it has an atom other than carbon, it qualifies as a heterocyclic compound.
- **Option D**: Again, it contains only carbon atoms, so it is not heterocyclic.

### Step 3: Conclusion
Based on the analysis, the only option that qualifies as a heterocyclic alicyclic compound is **Option C** because it contains oxygen in the ring.

### Final Answer
The answer is **Option C**.

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