Which is NOT a recommended practice when handling nylon line?

Correct Answer: Option C — Manila line stoppers should be used for holding nylon hawsers.

Nylon is highly elastic and slippery. Using a manila stopper on a nylon hawser is dangerous because the nylon will stretch significantly under load, causing the manila stopper to slip or break. Always use a nylon stopper of smaller diameter to ensure proper friction and grip on the hawser.