So, I'm pretty sure A/V stands for Audio-Visual Professionals. And, those are mostly required in like a large event center for managing all the audio-visual stuff.
Answer:
A
Explanation:
The subject of the sentence is 'The slaughter' with 'of animals' providing more detail which is why the verb is singular.
Https://www.gomuz.net/what-causes-marian-to-abruptly-leave-the-womens-room-in-a-visit-of-charity/
has the answer on the link
Answer: first person, second person & third person
Explanation: