"proper opportunity" is correct and usable in written English.
It can be used to indicate a window of time or a chance to take advantage of a situation. For example, "We need to take advantage of this proper opportunity to speak out against injustice."
It was a proper opportunity wasted.
That will give the news media the proper opportunity to challenge those requests in court".
The more serious the allegation, the more important it is to provide the subject with a proper opportunity to respond.
The programme made a number of "serious allegations" against the organisation and failed to provide a proper opportunity to respond.
Far from suppressing free speech, we will want to ensure that there is a proper opportunity to challenge religious and extremist speakers.
This gives proper opportunity for the young hero David, fresh from slaying Goliath, as well as Saul's three children, Jonathan, Merab and Michal, time to establish themselves.
"Equally a more determined approach may reveal proper opportunities for direct export-led revenue, capitalising on the world-wide reputation of the judiciary and the UK's reputation as a world leader in legal services and dispute resolution".
Freedom of speech and opinion with proper opportunities for reasonable debate form part of the English tradition, but the development of party and parliamentary government in its modern forms took place after the Act of Union of 1707, when, in politics, the history of England became the history of Britain.
MF-IC has a similar trend with PIC but is inferior to PIC due to passively waiting for proper opportunities of canceling the interference.
Original comment: 'Ridiculous, genetics may be a starting point but anyone (except those with brain damage/seriously disabled) can become as good as someone else if they have the proper opportunities and try hard.'.
Remember, your guide is very much like your conscience, there to help navigate and steer you to the proper opportunities and teachable moments for your greater good.
