In which way is the freedom of speech and civil rights act of 1964 (which made segregation illegal) similar?
a) both establish justiceb) both provide for the common defensec) both secure the freedoms of libertyd) both form a more perfect union

The correct option is C; BOTH SECURES THE FREEDOM OF LIBERTY.
The freedom of speech upholds that every human has the right to express their opinion and to freely receive and give out information. The Civil Right Act of 1964 ended segregation in public places and stop employment segregation that is based on racial differences. These two acts secure the liberty of freedom for all. 

The correct option is C

The Civil Rights Act of 1964 was a landmark legislation in the United States that prohibits unequal application of voter registration requirements and racial segregation in schools, blood banks, in the workplace and facilities that serve the public in general ("public places"). Freedom of expression is a principle that supports the freedom of an individual or a community to articulate their opinions and ideas without fear of reprisal, censorship or punishment.