Question 4 in Monday's reading lesson caused some problems because many people fell into the trap of 'overthinking' the answer. They were worried about the precise meaning of the word "infants", and whether it meant the same thing as "pre-school age children".
In the reading test, you shouldn't worry about such precise distinctions. It's enough to recognise that both "infants" and "pre-school age children" are very young children. The answer would be 'false' if the question mentioned "teenagers" or "adolescents" - these are definitely not pre-school ages.
Remember that the people who write these questions rely on paraphrasing and synonyms; it wouldn't really test your English if every question contained the exact words from the passage. If the words have basically the same meaning, don't analyse them any further.