Read the text and choose the correct part to complete the sentence.
Sarah became sullen and withdrawn. She wasn’t the lively teenager I knew. But the most worrying thing of all was that she was hardly eating anything. She refused to eat with the rest of the family and was having only light snacks in her room. At the time I didn’t want to make a big deal of it, as I thought I’d just make her more anxious about her exams. I was convinced that once she’d taken the exams, she would soon settle down and everything would get back to normal.
When the writer noticed that Sarah was not eating, she ...

• decided not to make a fuss about it.
• made Sarah eat her meals alone.
• thought that this was normal.
• was sure it would get worse.