Help providing evidence of Intention to reside in Ontario

[rsharp]

Hello all,
To begin with, here are my details:
I currently reside in USA

Applied FSW on March 2019
On April 2019 got my application cancelled by IRCC, Reason - I had selected 'Quebec' as my preferred province (I did not know Quebec does not accept FSW- it was an inadvertent mistake ).

Applied FSW again, selected 'Ontario' this time
AOR - 03 May 2019
on 10/09/2019 - received a letter asking for:

">An explanation letter, stating your intention to reside in Ontario as declared
> Any substantiating evidence of your intention to reside in Ontario, such as job postings you have applied for in Ontario and/or any ties you may have within the province"

I have not applied for any jobs in Ontario yet because I was waiting for PPR before applying for jobs and moving there. I have 6 days to respond to this concern from IRCC. And only tie I have with Ontario is a friend of mine who lives there. By the way, I am planning to go to Ontario because it has plenty of employment opportunities in my field of expertise.

Please help me in guiding me how to answer this concern from IRCC. I would greatly appreciate this.

Many thank to you in advance!