What first caused people to consider that the continents were once one large landmass? a. maps were created. b. continents looked like they fit together. c. north and south america were explored. d. similar fossils were found on many continents.

Continents looked like they fit together.

Explanation:

The continents as we know them today have formed, millions of years ago, a single continent called pangeia. The first person to propose this theory was Alfred Wegener, a German meteorologist who realized that the continents had very similar contours, which apparently fit together even thousands of miles apart.

This theory was later reinforced by scientists and paleontologists who found fossils of the same species on different continents, suggesting that at some point these animals lived on the same continent that later separated.

 B) Continents looked like they fit together.

Explanation: The continents were formed many years back and a single continent was known as pangeia. The study of this continent was introduced by the scientist Alfred Weneger .This theory stated that continents fit together even when splitted mile apart from huge landmass. .

Other options are incorrect because maps and fossil generation does not remark about continents. Exploration of South America and North America does not relate with continent discovery.Thus, the correct option  is option(B).

the answer would be c. sediment buildup on continental slope

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