The most accurate response regarding the importance of the inclusion of the Bill of Rights in the Constitution is:
It guaranteed the protection of basic rights.
The Bill of Rights, comprising the first ten amendments to the Constitution, was designed to protect individual liberties and rights, such as freedom of speech, religion, and the press, as well as rights to assemble and bear arms, among others. While it also serves to limit government power, its primary significance lies in the explicit protections it provides to individuals.