Answer:
The first sentence
Explanation:
The rest of the sentences have conjunctions like 'but' and 'because'. They're connecting two sentences together with a comma. The first one is one simple sentence with no commas or conjunctions. A conjunction is a word that connects two sentences to make a compound sentence.
The answer is B...knowing about her heart condition develops her character, this in turn makes her later death believable because she has been characterized as someone with a fragile heart.
Answer: a tool to help find the periodicals that contain articles on a particular subject.
A periodical index is a tool that contains the subject, author and keywords of a particular list of periodicals. This tool helps you find articles about specific topics. The way to look through an index is similar to that of looking for items in a library catalog.