Which is a component of modern Republican partys platform?

The correct answer is D) expanding investment in national defense.

The other options of the question were A) extending the role of government into industries that have been traditionally private, like healthcare. B) reducing government oversight of economic practices. C) reducing the role of government in industries that have been traditionally private, like energy production.

A component of the modern Republican Party's platform is the expanding investment in national defense.

The platform of a political party is the series of ideas, concepts, and proposals that the party supports. In the case of the Republican Party, they have conservative ideas on keeping the traditional values of the American family, they highly support the increase of investment in national defense to protect the country, they do not like to increases taxes to create social programs, and they favor minimum government regulation on business.

Investing heavily in national defense

Explanation:

The republican party's platform is responsible for promoting republic political mandate. It was form in those early days to abolish slavery. The modern republic platform has increased investment in the national defense has one of its component. National defense use of military economic and political power to maintain survival by maintaining peace and protecting the nation from external attacks.