I'm pretty sure the correct answer is C. Hope i wasn't to late.
1. The slaughter of Lakota Indians by United States Army troops
2. Hundreds of arrests
3. It was a rallying cry for native Americans
Answer:
a. Several warning signs can indicate car problems.
Explanation:
According to the given examples, there are different warning signs that indicate car trouble and they are specific to a particular car trouble such as a puddle of dark liquid under a car indicates a leak in the oil or transmission fluid, etc.
Therefore, the sentence that best expresses the implied main idea is several warning signs can indicate car problems.
They did not need mortar between their stone blocks and their buildings survived terrible earthquakes
