Are commas used correctly in this sentence?

My favorite colors are blue yellow and red.

Question 1 options:

yes

no

No

Are commas used correctly in this sentence?

The three meals of the day are breakfast, lunch, and dinner.

Question 2 options:

no

yes

Yes

No

The sentence "My favorite colors are blue yellow and red" does not use commas correctly. Commas should be used to separate a list of three or more items. To fix this sentence, you would need to add commas after "blue" and "yellow" to properly separate the list of colors. The corrected sentence would be:

"My favorite colors are blue, yellow, and red."