Select the correct answer. why did mao zedung get involved in the korea war?

The answer is Mao was worried about his border with North Korea being in jeopardy.

Explanation:

Mao Zedong was characterized as the leader of the Communist Party of China and the People's Republic of China. Thanks to him the Communist Party took power in China in 1949, and involved China in the Korean War because China warned that it would react if the UN military forces crossed the border with the Amnok River, but Mao waited for the Soviet help before attacking. One of his phrases about Korea is famous: "as close as lips and teeth"

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.