The correct answer is: $4\text{ fl oz}$
Explanation
In US kitchen measurements 1 cup equals 8 fluid ounces, so half a cup is half of that: 4 fluid ounces. Note this refers to fluid (volume) ounces; ounces as a unit of weight (dry ounces) depend on the ingredient’s density.
Steps:
- Know the conversion: $1\text{ cup}=8\text{ fl oz}$
- Take half: $\tfrac{1}{2}\times8\text{ fl oz}=4\text{ fl oz}$
Therefore, half a cup = $4\text{ fl oz}$ (about $118.294\text{ mL}$).
If you meant weight ounces, tell me the ingredient and I can convert it.