The United Nations estimates that 1.1 billion people have no access to fresh water and 2.4 billion lack access to adequate ________.
Correct answer: A
A. sanitation: conditions, sanitation system
B. reputation: reputation
C. equipment: equipment, tools
D. congestion: congestion, congestion
Based on the meaning of the sentence, we have the answer A is to combine the appropriate meaning of the previous clause related to “fresh water” and the two terms connected by “and” are parallel in meaning, the structure should be only answer A is related to hygiene.
The United Nations estimates that 1.1 billion people do not have access to fresh water and 2.4 billion do not have access to adequate sanitation.