The correct answer is option 3: Physical capital.

Physical capital refers to the inputs or resources that are used in the production process. These inputs include tools, machines, buildings, raw materials, and money in hand. They are tangible assets that are used to produce goods or services.

Option 1: Fixed capital refers to the long-term assets of a production process, such as land, buildings, and machinery. While fixed capital is part of physical capital, it does not encompass all the inputs listed in the question.

Option 2: Working capital refers to the funds that are used to cover the day-to-day expenses of a business, such as paying salaries and purchasing inventory. It does not specifically refer to the physical inputs required for production.

Option 4: Human capital refers to the skills, knowledge, and experiences of individuals that contribute to their productivity and ability to produce goods and services. While it is an important factor in production, it does not encompass the physical inputs listed in the question.

Therefore, the correct term that denotes the inputs in terms of tools, machines, buildings, raw materials, and money in hand required at any stage of production is physical capital.