The answer is D. Both a and c
Its the first layer of protection in the atmosphere against radiation from the sun and its harmful U.V. rays.
<span>Diminished breath sounds actually imply a reduction
or lack of air movement. In this case, anterior and posteriorsymmetric chest expansion should be examined to evaluate and compare
lung function. Tactile fremituspalpation, percussion, and voice sounds
auscultation should also be conducted because these tests reveal the density of
underlying tissue.</span>
