I believe it is the third one out of the all of them
<span>C is the answer. Carl Sandburg is the simple subject because he is the main focus of the simple sentence ‘Carl Sandburg was born’. ’The now famous Carl Sandburg’ is a complete subject. ‘Was born’ is the simple predicate and ‘was born in 1878 in Galesburg, Illinois’ is the complete predicate.</span>
I think it is accent marks and re-spelling because they always have accent marks when they are trying to help you pronounce the word and they help you recognize what letters to pronounce how to pronounce them.