________ are a set of wires, which carries a group of bits in parallel and has an associated control scheme. It provides a communication path between two or more devices of a computer system.

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**Solution:**

1. A **bus** is a set of wires that carry multiple bits in parallel between components of a computer system.

2. It includes an associated control scheme to manage the data transfer.

3. The **Control Unit** directs operations but is not a set of wires.

4. A **Register** is a small storage unit inside the CPU, not a communication path.

5. A **Cache** is a small, fast memory to store frequently accessed data, not a communication path.

Therefore, the correct answer is **Buses**.

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