Most of the time, yes.

False - example: anti-virus.

It is fine to delete a hidden file or folder, as programs are set up to run without them.

By default, hidden files and folders are not displayed in a file listing.

Each library has a default save location.

If you try to delete a program file, you will get a warning message stating that it may cause your computer harm or cause programs to not function properly by continuing. If it is a harmless file deletion, you will not get the same warning message prior to doing so.

Is this homework? So far all of your questions look a lot like homework

Yeah I think I put like 5 or 6 true or false questions.

https://www.askmehelpdesk.com/math-sciences/announcement-font-color-ff0000-u-b-read-first-expectations-homework-help-board-b-u-font.html

Read this first: Expectations for the Homework Help board
Do not simply retype or paste a question from your book or study material

We won't do your homework questions for you.
You were given the assignment for you to learn.

If you come up with your own answer and post it for us to critique that is within reason.

If you have some SPECIFIC questions that you couldn't find or didn't understand, we may help with that.
But this is your assignment, so show us you have at least attempted to complete it on your own.

Thank you.

Well I've already done 25 out of 30... I think I just need this one now but I ll figure it out no worries :]

Asking for help is fine, but you have to show us you've made an attempt. Copying and pasting the questions isn't showing an attempt, even if you did answer other assignment questions on your own.