Although environmental factors play a role in the best parenting style for each family, according to research in the us, the one that is most effective is the style of parenting

authoritative

Explanation:

The blank filled with the option authoritative.

There are four types of parenting

a) Authoritarian

b) Authoritative

c) Permissive

d)  Uninvolved.

Authoritarian is the type of parenting in which parents focus on obedience, punishment over discipline.

Authoritative parents believe in creating positive relationships with the child and enforcing rules.

Permissive parents do not enforce any kind of rule.

Uninvolved parents only provide little guidance, nurturing or attention toward their children.

So, the best way of parenting style according to research is Authoritative

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