Which title best completes the list below?

• belief in one god
• belief in the angels of god
• belief in the books of god, especially the qur'an
• belief in the prophets of god, especially muhammad
• belief in the day of judgment
• belief in the supremacy of god's will.

a. six pillars of faith in islam

b. six basic truths in buddhism

c. six universal truths in judaism

d. six articles of faith in christianity