Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the
correct word or phrase that best fits each of the numbered blanks from 31 to 35.
Most adults struggle to recall events from their first few years of life and now scientists have identified exactly when these childhood memories are lost forever. A new study into childhood amnesia has found that it tends to take (31) _______ around the age of seven. The rapid decline of memories persisting while children are five and six is owing to the change in the way memories are formed.

Question 31.