Answer:
Highlight the impact of Kettering's invention on society
Explanation:
You can use process of elimination on this. It's not the first one, because the author praises his invention and says it helped by "contributing to the growth of the U.S", we can eliminate the second one because he isn't writing about how sophisticated cars were, only about the invention. That leaves the last one, which makes the most sense and has been checked.
Answer:
A. They help maintain balance on both sides of a sentence, keeping coordinating ideas in similar forms.
Trying to be positive and focusing on how to resolve them or making them better.
This is a compound sentence, because there are two independent clauses here: 1. Stone bridges are strong + but 2. (strong bridges) are costly to build.
The conjunction 'but' connects two independent clauses, and a compound sentence contains at least two independent clauses, whereas a simple sentence has only one.
