To solve the problem, we will use the following property of logarithms. Given positive numbers a and b, we have that
[tex]ln(a\cdot b)=ln(a)+ln(b)[/tex]
in our case, we have a=5 and b=3. So we have
[tex]ln(3\cdot5)=ln(3)+ln(5)[/tex]
so we have
[tex]ln(15)=ln(3)+ln(5)[/tex]
which is option C
