“Failure To Afford Reasonable Opportunity To Avoid Collision”

141 (5) is 3 demerit points.

Source: Ontario Regulation 339/94, which governs the demerit point system.

If you scroll through the link (go to the bottom of the page), you'll see that 141 (5) is under "failing to yield the right of way," although technically it is a turning offence because section 141 deals with turns.