Final answer:
In English, if all items in a series are joined with coordinating conjunctions, no commas are necessary.
Step-by-step explanation:
In English, if all items in a series are joined with coordinating conjunctions, no commas are necessary. Coordinating conjunctions like 'and', 'but', and 'or' are used to connect words, phrases, or clauses of equal importance. When these conjunctions are used to join items in a series, the commas can be omitted.
For example: 'I like to eat apples and oranges and grapes'.
However, if the series contains more complex elements or if there is a need for clarity, commas can still be used.
Learn more about Commas in a series