"C'est une opportunité en or, propose-la-leur !"

Translation: It's a golden opportunity; offer it to them!

[BoSwicegood]

What does or mean here?

[Poef9]

"en or" literally translates to "in gold", or, in this context "made of gold" or "golden". "Or" means gold.

[BoSwicegood]

Is it a golden opportunity?

[BoSwicegood]

Sorry, I just saw it.

[Frog158409]

why is it not ' proposeS '?

[GrahamNdP]

For 1st group French verbs (those whose infinitive form ends in « -er » ), you drop the 's' from the present tense « tu » form for the imperative (command) tense! :)