Final answer:
The general transcription factors that assist RNA polymerase II at a core promoter region are TFIID, TFIIB, TFIIA, TFIIE, TFIIF, TFIIH, and Mediator.
Step-by-step explanation:
TFIID, TFIIB, TFIIA, TFIIE, TFIIF, TFIIH, and Mediator are the general transcription factors that assist RNA polymerase II at a core promoter region.