How does a writ of habeas corpus safeguard individual freedom?

A writ of habeas corpust safeguards individual freedom by allowing the accused to request trial by jury.

In the US system, federal courts can use the writ of habeas corpus in order to determine if a state's detention of a prisoner is valid.  A writ of habeas corpus is implemented to bring a prisoner or other detainee (e.g. institutionalized mental patient) before the court to determine if the person's imprisonment or detention is lawful.  A wrist of habeas corpus can also be used in order to examine any extradition processes used, the amount of bail, and the jurisdiction of the court.

faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form.

the correct version of this faulty parallelism in the sentence is:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the problem is the last sentence, the first two have a basic subject+verb+object structure.

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in all three sentences:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.