ANSWER ASAP 30 PTS! Please

So I just need someone to help me with this. I already answered the question, but my teacher left feedback that I need help answering. Thank you!

(The small text in Italic is what I need answered)

The diffusion of religion is biggest described as the process of

On their way home, what do claudia and jamie decide to do? a. visit the museum every week with mrs. frankweiler and make more discoveries about the exhibits b. tell saxonberg about the mystery behind the angel statue and give the sketch to the museum c. introduce mrs. frankweiler to their parents and tell her that they have adopted her as their grandmother d. visit mrs. frankweiler as often as they can and adopt her as their grandmother

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