Question

correct the text by inserting one comma. (note: in this skill, serial commas are not optional.) a nuclear power station exploded in chernobyl, ukraine, on april 26 1986.

Explanation:

To correct the text, we need to insert a comma between the day and the year in the date "April 26 1986" to follow the standard date formatting (day, year). So the corrected text is "A nuclear power station exploded in Chernobyl, Ukraine, on April 26, 1986."

Answer:

A nuclear power station exploded in Chernobyl, Ukraine, on April 26, 1986.