D. Catalyst
A catalyst is a reason for an event to occur.
theres no repeated revolutions so A is wrong
C is wrong as lack of innovative spirit would not help industrialization
D is wrong as there were not strong unions yet
so only choice left n the right ans is:
B) Its many coal deposits and navigable rivers helped to spur the Industrial Age.
The answer to the question is (B).
A theme is a universal lesson learned and the central idea is a one-sentence main idea.
- <em>Central idea</em> conveys that the text is about mainly, whereas, <em>theme </em>refers to the author's message, life lesson or moral learned from the story.
- A <em>central idea</em> cannot be referred to as the topic of the text, on the other hand, a <em>theme</em> cannot be same as topic.
- In one sentence, the<em> central idea </em>can be stated, whereas, <em>themes</em> are repeated and can be multiple.
Therefore, a theme is not the central idea, nor it can act as a topic of the text.
