The pleura is a connective tissue sheath that covers which of the following organs?
A. Lung
B. Heart
C. Spleen
D. Liver
The pleura is a thin membrane that surrounds the lungs and lines the chest cavity. It protects the lungs from friction and infection, and helps them expand and contract during breathing. The other organs listed are not covered by the pleura, but by other types of connective tissue sheaths, such as the pericardium for the heart, the peritoneum for the spleen and liver, and the mesentery for the intestines.
Therefore, the Correct Answer is A.