Direction: In the following passage, some words have been deleted. Fill in the blanks with the help of the alternatives given.

Studies have shown that there is no standard advice one can (1) ______ to parents. Some guidelines, however, may (2) ______. The first one is that children are all different and there is no one way (3) ______ bringing them up. Each child should be treated as (4) ______ individual. The second is that heredity is important, both for intelligence and (5) ______.