Evaluate the Given Function $f ( x ) = \left( \frac { 1 } { 5 } \right) ^ { x }$

Multiple Choice

Evaluate the given function.
- $f ( x ) = \left( \frac { 1 } { 5 } \right) ^ { x }$
$f ( 2 )$

A) 25
B) $\frac { 1 } { 10 }$
C) $\frac { 1 } { 32 }$
D) $\frac { 1 } { 25 }$