Final answer:
President Bush is a follower of the Christian faith. Therefore, the correct option is B.
Step-by-step explanation:
Inference about President Bush that is best supported by the passage in paragraphs 7-8 is: B. He is a follower of the Christian faith.
The passage mentions President Bush calling for prayers for those who grieve and are in distress, and he refers to a power greater than any of us, spoken through Psalm 23, a well-known Christian scripture. This indicates that President Bush has faith in and seeks comfort from a higher power, suggesting that he is a follower of the Christian faith.