We have to rewrite the expression and check if it matches any of the options given.
We can applythe properties of exponents to rewrite it as:
[tex]\begin{gathered} -5y^2\cdot5y^2\cdot5y^2\cdot5y^2 \\ (-1)(5y^2)^4 \\ (-1)(5y^{2\cdot4}) \\ (-1)(5y^8) \\ -5y^8 \end{gathered}[/tex]Answer: -5y^8 [Option C]
