Which description correctly characterizes a field investigation kit's contents?

• A. It contains only sample collection vials.
• B. It contains only digital data loggers.
• C. It includes forms and basic tools but not samples.
• D. It includes supplies to collect, preserve, and transport samples, forms, and basic tools during field investigations.

Answer: (D)

A field investigation kit must support everything you need to collect, preserve, and transport samples in the field, along with the paperwork and basic tools to carry out the investigation. The best description reflects all of these elements: supplies to collect the specimens, preserve them properly (so their integrity isn’t compromised until analysis), and transport them safely to the lab, plus forms for documenting the investigation and basic tools to handle and process items on site. This combination ensures accurate data collection and proper chain-of-custody, which are essential for valid laboratory analysis and reporting.

Choosing items that only include sample vials misses the crucial steps of preserving and transporting samples and documenting the procedure. Relying only on digital data loggers omits the physical samples and the paperwork needed to track what was collected and when. Including forms but not samples neglects the real goal of field work, and including samples but not preservation, transport, or forms risks compromising results and losing important context.