The correct answer is 1. Finding a single concept that links the lines together
Step-by-step explanation:
The central ideas in a text are the main ideas of the text, a text usually develops only one topic or theme divided into sub-ideas that are developed in paragraphs, in the same way, a paragraph deals with only a particular idea or point of the general topic or theme. When trying to understand the central ideas the reader should try to summarize the idea of each paragraph and thus by finding these ideas the reader will find the points of the general topic and understand the text as a whole. A simple way to find the general idea of a paragraph is to summarize it in a sentence or concept that describes what the paragraph is about and that covers all that was included in the paragraph. Thus, the way to find central ideas is to find a single concept or sentence that links the lines together or includes the content of a paragraph.