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

A. S-V-O (Subject-Verb-Object)

The correct sentence pattern for the given sentence is option C, S-V-N.

"S" represents the subject, which is "Traditional gas-powered cars."
"V" represents the verb, which is "are."
"N" represents the noun, which is "harmful to the environment."

Therefore, the sentence pattern is S-V-N.