Use the Fundamental Identities to Simplify the Expression $$\sin ^ { 2 } \theta + \tan ^ { 2 } \theta + \cos ^ { 2 } \theta$$

Multiple Choice

Use the fundamental identities to simplify the expression.
- $$\sin ^ { 2 } \theta + \tan ^ { 2 } \theta + \cos ^ { 2 } \theta$$

A) $\cos ^ { 3 } \theta$
B) $\tan ^ { 2 } \theta$
C) $\sin \theta$
D) $\sec ^ { 2 } \theta$