Question

question 2 of 10
many children were paralyzed by polio in the 1950s. today, polio has been reduced by 99 percent. which statement best explains how this disease has been almost eradicated?

a. group behavior helps humans cooperate in order to accomplish large, complex tasks.

b. human communities are learning to live with less money and fewer possessions.

c. human communities use their natural ecosystems in creative ways.

d. independent behavior helps humans live self - sufficiently and solve their own problems.

Explanation:

To eradicate polio, global cooperation (like vaccination campaigns) was needed. Option A talks about group behavior aiding complex tasks (polio eradication is complex). Option B is irrelevant (money/possessions not linked to polio). Option C: Ecosystem use doesn't relate to polio eradication. Option D: Independent behavior can't solve large - scale polio issue; group effort is key. So A is correct.

Answer:

A. Group behavior helps humans cooperate in order to accomplish large, complex tasks.