So, I'm looking at doing my PhD program at a University in US.

I had a Zoom meeting with one of their Admissions Representatives. We had a very good interaction and a Q and A session.

The PhD program is tuition free + free medical insurance and $2,500 per month stipend.

I reached out to the Head of Department I'm hoping to major my PhD on, and informed him of my intention, and he replied me. Here's his response:

"Thank you for your email. I would be happy to talk once we receive your application. I can then review it and let you know if it is competitive, and perhaps we could then talk.

Thanks again."

What makes a PhD application competitive?