The correct option is "Most". The sentence should convey that the majority of children love to watch animated films, making "Most children" the appropriate choice.
The sentence becomes:
Most children love to watch animated films.
The correct option is "Most".
Arun’s present age in years is 40% of Barun’s. In another few years, Arun’s age will be half of Barun’s. By what percentage will Barun’s age increase during this period?