Hi everyone,
First time using this site, I have a homework question in accounting, Which of the 3 types of activities (operating, investing or financing) is the best source of cash for a company in the long run?

Silly me, I found my own answer finally, the answer operating because you can only borrow so much money, you can only sell so much stock, in the long run continuous monies must come from production and sales! Thanks anyway!

Good job!

Indeed it is operating as that is the core of one's business.