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Answer:
In sewing, option D. the thread-take-up lever.
Explanation:
Is important. It keeps the thread tight and in the right place while you sew. As the needle goes up and down, this lever makes sure the thread stays smooth and doesn't get tangled or broken. Knowing how to use and set the thread-take-up lever properly is key for getting good, neat stitches when you're sewing, which is really important for your sewing machine to work well.
The correct answer is D. Thread-take-up lever.
The thread-take-up lever (option D) plays a crucial role in maintaining the tension and position of the thread during sewing. It moves up and down in synchronization with the sewing machine's needle, pulling the thread from the spool and guiding it through the machine.
As the needle rises after each stitch, the thread-take-up lever ensures that there is enough slack in the thread for the next stitch, and it also helps in preventing tangling or bunching of the thread. Thus, it actively contributes to keeping the thread in the correct position and tension throughout the sewing process.
- Thread guide (option A) typically directs the thread towards the needle.
- Upper thread tension (option B) controls how tight or loose the upper thread is while stitching.
- Treadle (option C) is the foot pedal used to control the sewing machine's speed.
Therefore, among the options provided, the thread-take-up lever (option D) is specifically responsible for maintaining the thread's position and tension during sewing.