Please help choose and explain answer

Hi! I'm new to this subreddit and will be starting a new job soon that requires PMP. I'm hoping to take and hopefully pass it by end of June. I've started reading the PMP exam simplified book and listening to Mohammeds mindset videos, and this sub has been very helpful. This was one of the questions and Mohammed, chapgpt, and Gemini all gave different answers. Hoping you guys can help explain the answer and reasoning to me. Thank you all!