<em>Answer:</em><em>Take your coin or piece of jewelry, and place a strong magnet on top see if the magnet sticks to the object by the magnetic pull, or if it slides off onto the ground. If the metal attracts the magnet, you know it must be an alloy mixture and not a precious metal.</em>
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Answer and Explanation:
<u>A complex sentence is formed by joining an independent clause and a dependent one. However, we have four different sentences here. We must join them and use a subordinating conjunction to form a complex sentence.</u>
One possibility is using the subordinating conjunction "since", or "provided that":
- Since choosing between a desktop and a laptop models is a decision for the consumer, the decision is personal.
- Provided that choosing between a desktop and a laptop models is a decision for the consumer, the decision is personal.
Another possibility is using the conjunction "because":
- Choosing between a desktop and a laptop models is a decision for the consumer because it is personal.