What is the correct sentence pattern to this sentence?

"Traditional gas-powered cars are harmful to the environment."
A. S-V-O
B. S-V-IO
C. S-V-N
D. S-V-A

C. S-V-N (Subject-Verb-Noun)

The correct sentence pattern for the sentence "Traditional gas-powered cars are harmful to the environment" is C. S-V-N.