Which of the following best describes the absorption characteristics of dust in the interstellar medium?

W) Its effects are strongest in radio wavelengths

X) It absorbs light at all wavelengths with about the same efficiency

Y) It preferentially absorbs optical light at redder wavelengths

Z) It preferentially absorbs optical light at bluer wavelengths
Z) IT PREFERENTIALLY ABSORBS OPTICAL LIGHT AT BLUER WAVELENGTHS