Five sentences related to a topic are given below. Four of them can be put together to form a meaningful paragraph. Select the odd one.

1. China is the most populous country in the world, closely followed by India.

2. Population density impacts aspects such as infrastructure development and resource allocation.

3. Increased population can also put stress on a country's environmental resources.

4. Fresh spinach is rich in vitamins K and A, as well as magnesium.

5. Family planning and proper policy implementation can help in managing population growth.