"The French competition is significant."
Translation:La concurrence française est importante.
See an explanation here:
Although there is a difference in meaning between "concurrence" & "concours", "Le concours francais est important" seems acceptable. I await more clarification on why "Le concours francais est important" is not accepted.
"La concurrence" is the appropriate answer in the Economics section of the tree. "La concours" would be correct in the Sports section.