Which of the following is true about fiberglass batts?

Fiberglass batts are widely recognized for their thermal insulation properties, with a standard R-value of R-3 to R-4 per inch. This range indicates the effectiveness of the insulation in resisting heat flow; the higher the R-value, the better the material's insulating capability. Because fiberglass batts have a consistent performance rating in providing this level of thermal resistance, they are a popular choice for various insulation applications in both residential and commercial buildings.

Other options suggest alternatives or uses for fiberglass batts that are not inherently true. For instance, while they are not made from recycled plastic (which pertains to other types of insulation materials), and they can actually be used in attics and may sometimes be suitable for basements depending on moisture considerations, these statements do not accurately reflect the primary and most widely accepted characteristic of fiberglass batts. Thus, the statement about their standard R-value directly addresses their core function in insulation, establishing it as the most factually correct choice.