To find out how many grams of protein Luisa consumed from 3 ounces of pretzels, we can first determine the protein content in 1 ounce and then multiply it by 3.
The protein content per ounce of pretzels is:
2.93 g of protein per ounce.
For 3 ounces:
\[ \text{Protein in 3 ounces} = 2.93 , \text{g} \times 3 = 8.79 , \text{g} \]
So, Luisa consumed 8.79 g of protein.
The correct answer is 8.79 g.