Is the official web portal for the u. s. government, providing access to all official u. s. government services and information.
a.
usa. gov
b.
loc. gov
c.
accessusa. gov
d.
hamilton. gov

A) USA.gov

Explanation:

 USA.gov is the official web site or web portal of the US (united state) government. It basically provide official access to the US government various type of services and information.

It is basically designed to improve the interaction between the public and the US government. This website basically a part of the technology and different types of services in GSA( general service administration).  

you can not change you age soon as you signed up. the only way is too delete your account and use another account to sign up and put your correct age.

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