Where are field cockroaches commonly found?

Field cockroaches are commonly found in irrigated fields and yards because these environments provide them with the moisture and organic matter necessary for survival. They thrive in areas where there is ample vegetation, as it offers food sources such as decaying plant material and shelter. This habitat is conducive to their life cycle, allowing them to reproduce and establish populations.

The other choices, while they may describe habitats for some types of cockroaches, do not accurately represent the specific environment that field cockroaches prefer. For instance, sewers and basements, as well as dark, humid environments, are more typical of other species that favor such confined spaces. Garages and woodpiles may provide shelter, but they lack the necessary moisture and food sources that irrigated fields and yards offer. Thus, the correct answer highlights the specific ecological niche that field cockroaches inhabit.