Which statement most characterizes laboratory research? 

A)  It is slower than similar field research. 
B)  It is more expensive than similar field research. 
C)  It allows measurement of model ecosystems and populations under controlled conditions. 
D)  It has been used to develop most of our knowledge about ecosystems.

Laboratory research allows for the measurement of model ecosystems and populations under controlled conditions, providing a better understanding of cause-and-effect relationships and the ability to manipulate variables. While field research may be faster and less expensive in some cases, it is often limited by uncontrollable variables and unpredictable outcomes. It is also important to note that laboratory research is not the only source of knowledge about ecosystems, as field research and other forms of observation and experimentation also contribute to our understanding of the natural world.