What is true about elections for the European Parliament (EP)?

Question

Quizplus · Accepted Answer

The European Parliament is elected by proportional representation, which means that seats are allocated based on the share of the vote that each political party or group receives. This system promotes diversity, as smaller parties or groups have a better chance of being represented than in systems based on winner-takes-all.

Other statements are not entirely true:
A) The EP has been elected by voters since the Treaty of Rome in 1957, but this does not mean that elections have been held every year since then.
B) Turnout for elections has grown in recent years, but this is not always the case and varies from country to country.
D) Elections occur in different countries at different times, this is true, but it is not a defining characteristic of the EP. 
E) The Lisbon Treaty did not require that elections be held every two years, this statement is completely false.

What Is True About Elections for the European Parliament (EP)