When James, the half-brother of Jesus, advised the apostles concerning the letter to send to Gentile converts, he emphasized that they should avoid activities associated with pagan worship. This advice is primarily outlined in Acts 15 during the council at Jerusalem, where it was decided that Gentile believers did not need to fully adhere to the Jewish Law but should abstain from certain practices, including food sacrificed to idols, consuming blood, and sexual immorality. Therefore, the correct response would be:
avoid activities associated with pagan worship.