Answer:
OB. an interview with a Romanian who was a child during World War II
Step-by-step explanation:
Because, Sujata is looking for answers on how the children coped with World War II and how it affected their studying and education. There's an interview, with a child who went through World War II, meaning they'll ask him/her questions and one of them will probably include about education.
If we look at the first option, it says a nonfiction book that discusses the European countries affected by World War II ; Sujata is looking for how children coped with war and how their education was affected, not how European countries were affected by World War II. She is looking for a specific topic about Children.
OC, provides a website with information about the effects of war ; This option doesn't specify which war we are looking for and if it includes how children coped and how their education was affected, so it's definitely not this one.
OD, Is an article that lists the requirements for a good Romanian educational system, not how the education was affected, it instead lists the requirements to make up a good Romanian educational system, it does nothing with war, or affection.