Which best explains the purpose of the ninth amendment?
to ensure individual freedoms
to promote independent choices
to protect personal properties
to define specific personal rights

A)To ensure individual freedoms.

Explanation:

The Ninth Amendment deals with enumerated rights. These can be defined as rights not specifically listed in the US Constitution. These enumerated rights belong to the citizens rather than the government. This amendment was put in place to ensure that citizens were not merely limited to the rights included within the first eight amendments of the Bill of Rights.

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

the main reason that the constitution did not proclaim all men to be free and equal is because of the issue of slavery.