Which of the following is a producer good?

The correct answer is D. Hammer.

A producer good is a good that is used to produce other goods and services. A pen, a cycle, and a mobile phone are all consumer goods, which are goods that are used to satisfy human wants and needs directly. A hammer, on the other hand, is a producer good that is used to produce other goods, such as furniture, houses, and cars.

Here is a brief explanation of each option:

• A pen is a writing instrument that is used to write on paper. It is a consumer good because it is used to satisfy the human want of writing.
• A cycle is a vehicle that is used for transportation. It is a consumer good because it is used to satisfy the human want of transportation.
• A mobile phone is a telecommunications device that is used to make and receive calls, send and receive text messages, and access the internet. It is a consumer good because it is used to satisfy the human wants of communication and information.
• A hammer is a tool that is used to drive nails into wood. It is a producer good because it is used to produce other goods, such as furniture, houses, and cars.