Which of the following surfaces would absorb the most moisture?

Latex painted walls would absorb the most moisture compared to the other surfaces listed. This is due to the porous nature of latex paint, which can allow for some degree of moisture absorption. Unlike fiberglass, which has a non-porous surface, latex paint can interact with humidity in the air, making it more susceptible to absorbing moisture.

Metal surfaces and plastic surfaces, on the other hand, are generally non-absorptive. They have smooth, impermeable finishes that do not allow moisture to penetrate. Therefore, when evaluating the ability of different surfaces to absorb moisture, latex painted walls stand out as the most likely candidate to retain moisture within their structure due to their properties.