The most stable conformer of glycol.

Explanation

To determine the most stable conformer of glycol, we can follow these steps:

### Step 1: Understand the Structure of Glycol
Glycol, specifically ethylene glycol (HO-CH2-CH2-OH), has two hydroxyl (-OH) groups attached to a two-carbon chain. This structure allows for various conformations due to rotation around the carbon-carbon single bond.

**Hint:** Identify the functional groups and the carbon backbone of glycol.

### Step 2: Identify Possible Conformers
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