is this sentence in active voice or passive voice? dairy products were consumed by north africans as early…

is this sentence in active voice or passive voice? dairy products were consumed by north africans as early as seven thousand years ago. active voice passive voice
Answer
Brief Explanations:
In passive - voice sentences, the subject receives the action. Here, "Dairy products" (the subject) are receiving the action of being consumed, and the doer "North Africans" is introduced with "by".
Answer:
passive voice