Donna has completed \(14\) out of \(28\) laps.
1. Fraction of laps completed:
\[ \text{Fraction completed} = \frac{\text{Number of laps completed}}{\text{Total number of laps}} = \frac{14}{28} = \frac{1}{2} \]
So, Donna has completed \( \frac{1}{2} \) or half of her swim.
2. Fraction of swim remaining:
To find the fraction of her swim remaining, subtract the fraction completed from \(1\):
\[ \text{Fraction remaining} = 1 - \frac{1}{2} = \frac{1}{2} \]
So, Donna has \( \frac{1}{2} \) or half of her swim remaining.