Question

continents are separated by large expanses of ocean. which of the following most likely explains the distribution of camelid species and fossils across multiple continents? choose 1 answer: a camelid ancestors migrated among continents when they were connected by a land bridge. b camelid ancestors swam long distances across the ocean. c camelid ancestors evolved independently in africa, asia, and south america.

Explanation:

To determine the correct answer, we analyze each option:

• Option A: The theory of continental drift and land bridges (like Beringia) explains how species could migrate between continents when they were connected. Camelid ancestors migrating via land bridges is a plausible explanation for their distribution across multiple continents.
• Option B: Camelids are not adapted for long - distance ocean swimming, so this is highly unlikely.
• Option C: Independent evolution in multiple continents to form the same camelid - like species is not consistent with evolutionary theory, as evolution of the same complex species independently in different regions is rare.

Answer:

A. Camelid ancestors migrated among continents when they were connected by a land bridge.