Final answer:
A comma and a semicolon can both appear multiple times within the same sentence, with commas used for lists and slight pauses, and semicolons for related clauses or complex lists.
Step-by-step explanation:
A punctuation mark that can present itself multiple times in the same sentence is the comma. Commas are versatile punctuation marks frequently used to separate items in lists, clauses in complex sentences, or to denote a pause that is less emphatic than that signaled by a period or semicolon. They help clarify meaning by organizing elements within a sentence for the reader. For example, in a sentence like 'I need to buy eggs, milk, bread, and cheese,' commas are used to separate the items on the shopping list. Another punctuation mark that can appear multiple times is the semicolon, which can be used to join closely related independent clauses or to separate items in a list that contains commas for clarity, such as in 'We visited Paris, France; Rome, Italy; and Madrid, Spain.'