8. What type of tubing connection is commonly used with both metal and plastic tubing?

A. Flared fitting
B. Flanged fitting
C. Quick connect
D. Compression fitting


A. Incorrect. A flared fitting is used for copper or aluminum tubing.
B. Incorrect. A flanged fitting is not a type of tubing connection.
C. Incorrect. A quick connect is commonly used with plastic tubing or plastic piping.
D. Correct. A compression fitting is commonly used with both metal and plastic tubing.

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