Being inactive has been linked to a(n) _____________ in the risk of health problems later in life

Прочитайте текст с пропуском. В ответе запишите цифру 1, 2, 3 или 4, соответствующую выбранному Вами варианту ответа.

Being inactive has been linked to a(n) _____________ in the risk of health problems later in life.

1. increase
2. development
3. gain
4. extension