Final answer:
The central idea in the paragraph is the complex and special relationship between Julia and her mother, marked by shared identity and contrasts between pride and disagreements.
Step-by-step explanation:
The central idea in the paragraph which includes the sentence 'Julia was proud to share her mother’s name' appears to center on the special relationship and shared identity between Julia and her mother. The contrast between the pride in sharing her mother's name and their frequent disagreements suggests a complex relationship filled with both harmony and conflict. The mention of Julia's behavior being the best among all the babies could imply that despite differences, Julia valued the familial connection represented by her name.