We need the article to answer a question dont u think
Chronological order is the method of sequencing or putting certain times and dates in order of when the happened from first to last.
The correct sentence is (A). In this example the author stablishes a good parallel structure when he/she enumerates the items. Commas must not be used in an independent clause; in particular, before a verb (the comma before “were” is not correct as an example B).
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