Which of the following is not the branch of American Federal government

A．In male adults the vocal cords are typically longer than in female adults.
B．In male adults the vocal cords are typically shorter than in female adults.
C．In male adults the vocal cords are typically thinner than in female adults.
D．The vocal cords in both male and female adults are of the same length.

A．provide benefits for the sick, old and unemployed
B．encourage people to take on more social obligations
C．guarantee everyone the right of employment to support their families
D．provide everyone with the right to a minimum subsistence for a certain period