Answer:
The South Asian region has the "largest number" of the "10 most populous countries" within its boundaries.
Step-by-step explanation:
- Out of the 20 most populous countries in the world, 9 are hosted by South Asia alone.
- These countries are namely China, India, Indonesia, Pakistan, Bangladesh, Japan, The Philippines, Vietnam, and Thailand.
- China being at the top of the list makes about 18.59% of the total world population.
- It is followed by India which makes about 17.71% of the total world population. A little above 25% of the world population is constituted by South Asia alone.