From the quantities given below , choose the one which is not indepndent of the choice of orientation of the coordinate axes:
(a) `vecP+vecq`
(b) `|vecP+vecq-vecr|`
(c) `2px+5qy`

Explanation

To solve the problem, we need to identify which of the given quantities is not independent of the choice of orientation of the coordinate axes.

### Step-by-Step Solution:

1. **Understanding Vector Addition and Subtraction**:
- Vector addition and subtraction are operations that do not depend on the orientation of the coordinate axes. This means that if we add or subtract vectors, the result will remain the same regardless of how we choose to orient our axes.

2. **Analyzing the First Option: `vecP + vecq`**:
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