I believe that if a catholic hears the message of salvation and responds favorably, that yes, they can be saved. Will they live out their lives as catholics actually being baby christians left at the doorstep never being discipled? I don't think so. Heres why: 4:29 But if from thence thou shalt seek the LORD thy God, thou shalt find him, if thou seek him with all thy heart and with all thy soul.Jer 29:13 And ye shall seek me, and find me, when ye shall search for me with all your heart.Lu 11:10 For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened. Once a person is truly saved they have met Jesus. As a result as a baby they will desire the sincere milk of the Word. In other words they will begin to seek God. True enough? The bible teaches there is one true faith or gospel.Eph 4:5 One Lord, one faith, one baptism. If another is taught The people teaching it are to be accursed. Ga 1:9 As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed. All that being said, we have to ask: Does the catholic church preach the gospel of Jesus Christ as outlined in the bible? The answer is clearly no. They teach a gospel of works and an unbloody mass that is an abomination to the true gospel of Christ. Hence according to scripture those that teach it and the catholic church itself is accursed. So what about the baby christian that is catholic and someone presented them with the true gospel of repentance? I believe scripture teaches that God and His Holy Spirit will lead them out if the convert will seek God through His word. 2Co 6:17 Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you. Re 18:4 And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues. The Word of God will eventually lead a person out of the catholic church. No, it is unscriptural for them to stay in order to lead their friends out. Where would they send them? We can see that the teachings of the RCC are accursed and an abomination to God. We can see that the God which cannot lie teaches us what to do:Joh 4:23 But the hour cometh, and now is, when the true worshippers shall worship the Father in spirit and in truth: for the Father seeketh such to worship him. Joh 8:32 And ye shall know the truth, and the truth shall make you free.