[tex](2^2)^5(2^6)\qquad\text{use}\ (a^n)^m=a^{n\cdot m}\\\\=(2^{2\cdot5})(2^6)=(2^{10})(2^6)\qquad\text{use}\ a^n\cdot a^m=a^{n+m}\\\\=2^{10+6}=2^{16}\\\\Answer:\ \boxed{c.\ 2^{16}}[/tex]