As a result of the long march, china’s communist party
grew stronger and more determined.
chose mao zedong as its new leader.
became weaker and lost the civil war.
decided to retreat from the nationalists.

grew stronger and more determined.

Explanation:

The long march was a march of 6,000 kilometers that the communist party had to do to change its headquarters from southeast asia to northwest china, the long march inspired many chinese young people to join the communist party, its the only correct option because Mao Zedon was never chosen as leader of the communist party he gained that right with his actions and the people just followed him.

grew stronger and more determined.

chose Mao Zedong as its new leader.

Explanation:

From October 1934 to October 1935, several divisions of the Red Army retreated towards the North of China to evade the Nationalist army. The losses were terrible but allowed the Red Army to survive and endeared them to peasants everywhere in the country. The long march strengthened the communists, but more importantly, opened the door for Mao, who became the rising leader of the movement.  

answer; i believe the above statement is (true);

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)