Verified Answer :

xokkxo

78 x 0.05 = 3.9
the answer is C. 3.9

Of means multiply, so we are going to multiply.
First, make 5% a decimal:5%=\(\frac{5}{100}\)=0.05

Now, we multiply 0.05 by 78:
\(0.05\)×\(78\)=\(3.9\)
Your answer is C. 3.9