The earliest humans originated in northern europe (1) and traveled south via land bridges to asia and africa (2). as people spread throughout the world, a shift from hunter-gather to farming occurred (3), which led to increased food production, laws, culture, and disease (4).
while part (1) is accurate, parts (2), (3), and (4) need revision.
while parts (1), (2), and (4) are accurate, part (3) needs revision.
while parts (1) and (2) are accurate, parts (3) and (4) need revision.
while parts (3) and (4) are accurate, parts (1) and (2) need revision.

While parts (3) and (4) are accurate, parts (1) and (2) need revision.

Explanation:

It is true that as the human being spread throughout the world, there was a change from becoming hunter-gatherers to farmers due to the birth of agriculture in different civilizations settled in growing fertiles (3). It is also true that due to this, food production increased, laws were created to regulate society, culture was refined and due to the creation of cities diseases were generated due to the agglomeration of human beings, animals (livestock) and their waste (4).

However, human beings did not originate in northern Europe but in Africa, specifically in the horn of Africa (modern Djibouti, Eritrea, Ethiopia and Somalia) (1). They also expanded through Asia and Europe through different places (Strait of Gibraltar, Arab Peninsula, Anatolia, etc ...) (2).

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.

i think the answer is b.