The phrase "ignited the long-smoldering resentments" in paragraph 13 suggests this about the black grassroots organizations: A. Their discontent with apartheid had developed over time and the new laws only made their hatred of it even stronger.
<h3>Meaning of Smoldering</h3>
When sentiments are said to be smoldering, it means that they had been existing in a suppressed state. So, the resentments of the people had been existing in a smoldering state.
So, the new laws by the black grassroots organizations fanned the existing flames of resentment in the people.
Learn more about the black grassroots organizations here:
brainly.com/question/1122245