In order to answer this, we need some context. I'm assuming this is a comprehension?
Answer:
(1) An author doing research for a book asked thousands of Americans what made them happy.
Explanation:
It's tempting to say that the main idea is the conclusion of the paragraph, which is stated in sentence (5). However, the main focus of the paragraph is more on the research on what makes American happy, which is detailed by the responses of the research subjects, as well as the conclusion of the research study. If (5) was the main focus, there would be more details about why most of the things that make you happy are simple and free or inexpensive or what the general research about this topic has been, instead of just one study in particular.
Explanation:
India strongly supported East Pakistan (now Bangladesh) in its secessionist conflict with Pakistan in late 1971, and India's armed forces achieved a swift and decisive victory over Pakistan that led to the creation of Bangladesh. She became the first government leader to recognize the new country
He will 38.5 kilograms of food to feed the pigs. Because if you multiply 2.75×14 you will get 38.5 and even if you add 2.75 14 times you will still get back the same answer 38.5.
