Answer:

The person who delivers our letters and parcels is called a postman. Let's understand why the correct answer is option 'A' by exploring the role and responsibilities of a postman.

Role of a Postman:
A postman is an important member of the postal service who is responsible for delivering letters, parcels, and other important documents to individuals and businesses. They play a crucial role in ensuring that mail reaches its intended recipients on time.

Responsibilities of a Postman:
1. Collecting Mail: Postmen begin their day by collecting mail from the local post office or sorting center. They sort the mail based on the addresses and prepare it for delivery.

2. Delivering Letters and Parcels: Postmen travel on foot, bicycle, or vehicles to deliver the mail to various addresses in their assigned area. They ensure that the mail is delivered accurately and promptly.

3. Obtaining Signatures: For important documents or registered mail, postmen often require the recipient's signature as proof of delivery. They ensure that the recipient signs the necessary documents and record the details appropriately.

4. Providing Information: Postmen are knowledgeable about postal services and are often approached by people with queries related to mail delivery, postage rates, and other postal services. They provide assistance and help individuals with their inquiries.

5. Reporting Issues: Postmen report any issues they come across during their delivery rounds, such as damaged mailboxes, incorrect addresses, or items that cannot be delivered. This helps in improving the overall efficiency of the postal service.

6. Safety and Security: Postmen ensure the safety and security of the mail entrusted to them. They handle confidential documents responsibly and take necessary precautions to prevent loss or theft during delivery.

Conclusion:
The person who delivers our letters and parcels is indeed a postman. They play a vital role in the postal service by collecting, sorting, and delivering mail to individuals and businesses. Their responsibilities include accurate and timely delivery, obtaining signatures, providing information, and ensuring the safety of the mail.