May I use "at all" in positive statements?

Which of the following sentences below uses the simplest and clearest language? a. library cards are not too hard to get, but they aren't too easy to get either. b. some libraries have a lot of rules to follow for filling out the forms. c. library cards make it possible to read books all year long. d. once you get the application, you can figure it out.

What word or phrase is modified by the prepositional phrase in the sentence below? marisol's puppy likes napping under the couch because it is warm and cozy

When your appreciate the opinions of other teammates you show