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Infusion rate in mL/hr is total volume ÷ hours. Compute: (250\ \text{mL} \div 2\ \text{hr} = 125\ \text{mL/hr}). Thus, C is correct. Option A (100) would deliver just 200 mL in 2 hours; B (110) is an unjustified rounding; D (150) would finish early (250 mL would run out in (250/150 \approx 1.67) hr). TEAS expects clean setup and unit tracking:

(\dfrac{\text{mL}}{\text{hr}} = \dfrac{250\ \text{mL}}{2\ \text{hr}} = 125\ \dfrac{\text{mL}}{\text{hr}}).

As a cross-check, convert to mL/min: (125\ \text{mL/hr} \div 60 \approx 2.083\ \text{mL/min}), which seems reasonable for a modest IV. If a drip set were specified (e.g., 15 gtt/mL), you’d multiply mL/min by the drop factor to get gtt/min; but here the question targets pump setting (mL/hr). Keep arithmetic exact—do not round unless instructed. In clinical practice, confirm whether a loading dose or titration range applies; for TEAS, focus on proportional calculations, ensuring that time units are consistent (hours with hours) to avoid mistakes that can double or halve the intended rate.