Question

read the passage.
april fools’ days around the world
april fools’ day is celebrated around the world, although it varies somewhat from country to country. in the united states, for example, it’s a day to play practical jokes. in france, where the holiday is known as poisson d’avril, or april fish, people secretly tape paper fish on their friends’ backs. a common april fools’ prank in portugal is to throw flour on someone; in scotland, the most popular trick involves sending someone on a useless errand. denmark celebrates april fools’ day on april 1, but some people there celebrate again in may. maj - kat, on may 1, is yet another day for jokes and pranks in the spring.
what is the main, or central, idea of the passage?
on poisson d’avril, frances version of what americans call april fools’ day, pranksters tape paper fish to peoples backs.
though there are variations in how different countries observe april fools’ day, the celebrations all involve playing pranks.

Explanation:

The passage first states that April Fools' Day is celebrated worldwide with variations by country. Then it gives examples of pranks in different countries (US, France, Portugal, Scotland, Denmark). The first option only focuses on France's tradition, which is a detail. The second option captures the overall idea: different countries have varied observances but all involve pranks.

Answer:

B. Though there are variations in how different countries observe April Fools’ Day, the celebrations all involve playing pranks.