Here are the main purposes for each of the items you listed:
-
Design of a water hose:
- Answer: functionality
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Design of a couch:
- Answer: functionality (though aesthetics is also important, the primary purpose is for comfort and usability)
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E-mail message from your boss informing you of a meeting:
- Answer: communication
-
Garden of flowers in your front yard:
- Answer: aesthetics (though it may offer functionality such as improving property value or providing a habitat for wildlife)
-
Handwritten reminder from your teacher:
- Answer: communication
If you have any further questions or need additional explanations, feel free to ask!