I. `CH_(3) - CH_(2) - CH_(2) - CH_(2) - OH`
II. `CH_(3) - CH_(2) - underset(OH)underset(|)(CH) - CH_(3)`
III. `CH_(3) - underset(OH) underset(|)overset(CH_(3))overset(|)(C) - CH_(3)`
IV. `CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - OH`
V. `CH_(3) - CH_(2) - O - CH_(2) - CH_(3)`
VI. `CH_(3) - O - CH_(2) - CH_(2) - CH_(3)`
VII. `CH_(3) - O - underset(CH_(3))underset(|)(CH) - CH_(3)`
Identify the pairs of compounds that represents position isomerism.

Explanation

To identify the pairs of compounds that represent position isomerism, we need to analyze the given compounds based on the definition of position isomers. Position isomers are compounds that have the same molecular formula and the same functional group, but differ in the position of the functional group on the carbon chain.

### Step-by-Step Solution:

1. **Identify the Functional Groups**:
- The first four compounds (I, II, III, IV) contain hydroxyl (-OH) groups.
- The last three compounds (V, VI, VII) contain ether linkages (-O-).

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