"Do you think it would be a good idea to buy a new bike?"
Pensez-vous que ___ une bonne idée d'acheter un nouveau vélo ?
(2) ce soit
(3) ce serait
Are all three choices acceptable? I guess the indicative can be used when the asker thinks that the answer is likely positive, the subjunctive when the asker thinks that the answer is likely negative, and the conditional is neutral?