What type of data is primarily analyzed when assessing new industrial development?

When assessing new industrial development, the primary focus is on building starts and units under construction. This type of data provides insight into the current level of investment and infrastructure development in a specific area. Analyzing building starts reveals how many new projects are being initiated, which is a direct indicator of economic activity and investor confidence in the industrial sector. Additionally, examining units under construction gives an understanding of ongoing projects that are expected to complete soon, contributing to future industrial capacity.

The other options, while relevant to broader economic analysis, do not directly measure the immediate indicators of industrial development. The growth of agricultural land pertains more to agricultural production than industrial activity. Fluctuation of interest rates has implications for financing and investment decisions but does not reflect the tangible, physical aspects of developing industrial properties. Employment trends can indicate economic health and workforce availability but do not provide specific information about the initiation or progression of industrial projects. Therefore, focusing on building starts and units under construction is essential for accurately assessing new industrial development.