To answer this question, we need to consider the total number of followers for each religion. Let's go through each option to understand why it is correct or incorrect:
Option A) Islam - This option is incorrect because Islam is not the religion with the most number of followers.
Option B) Hinduism - This option is incorrect because Hinduism is not the religion with the most number of followers.
Option C) Buddhism - This option is incorrect because Buddhism is not the religion with the most number of followers.
Option D) Christianity - This option is correct because Christianity has the most number of followers worldwide. According to various sources, including the Pew Research Center, Christianity is the largest religion in terms of the number of followers.
The correct answer is D. This option is correct because Christianity has the highest number of followers compared to the other options.