Other

Question

correct the text by inserting two commas. (Note: in this skill, serial commas are not

optional.)

On January 23 1960 Don Walsh and Jacques Picard became the first to

explore the deepest part of the ocean.

Answer

On January 23, 1960, Don Walsh and Jacques Picard became the first to explore the deepest part of the ocean.

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The given answer correctly adds two commas to the sentence to make it grammatically correct. The first comma is added after the date "January 23...