Question

in which of these sentences is the list correctly punctuated?
lena served chips,
salsa and
guacamole.
roses lilies and
petunias, are the
flowers rohani
planted in her
garden.
ivan wants to climb
mount everest
mount rainier, and
mont blanc.
amits favorite sports
are gymnastics,
speed skating, and
weight lifting.

Explanation:

• First sentence: Missing a comma before "and" in the list of three items (should be "chips, salsa, and guacamole").
• Second sentence: Missing a comma between the first two list items (should be "Roses, lilies, and petunias").
• Third sentence: Correctly uses a comma before "and" (Oxford comma) for the final item in the three-item list, with proper separation of each list item.
• Fourth sentence: Unnecessary comma after "speed skating" creates an error; the Oxford comma is correct, but the structure here misplaces the comma (it should only be before the final "and").

Answer:

Ivan wants to climb Mount Everest, Mount Rainier, and Mont Blanc.