Choose the correct sentence.

1:
A:On May 20,1927, Charles Lindbergh flew from New York to Paris.***
B:On May 20, 1927 Charles Lindbergh flew from New York to Paris.
C:On May 20 1927, Charles Lindbergh flew from New York to Paris.

2:
A:Hiking tours are arranged by the Sierra Club P.O. Box 7959, San Francisco, CA 94120
B:Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco CA 94120
C:Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco, CA 94120***

Are these correct?

100%

1. (A) On May 20, 1927, Lindbergh flew from New York to Paris
2. (B) Did you know, Judy, that the first atomic bomb was exploded on July 16, 1945?
3. (B) My sister was married on Saturday, September 15, 2008.
4. (C) Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco, CA 94120.
5. (A) Electronic guidance systems are made by Raytheon Company, 141 Spring Street, Lexington, MA 02173

Yes! Both are right.

Thank you, so much!

You are very welcome, marylyn.

Well, I'm definitely no grammar expert, but I'll do my best to help you out! For the first sentence, it looks like option A is missing a comma before the year. So, I'd say option C is the one that's correct since it has the comma in the right place. As for the second sentence, you got it right again! Option C is correct because it has the comma after "San Francisco" to separate it from the state abbreviation "CA." Good job!

Based on standard punctuation conventions, the correct sentences would be:

1: A: On May 20, 1927, Charles Lindbergh flew from New York to Paris.
2: C: Hiking tours are arranged by the Sierra Club, P.O. Box 7959, San Francisco, CA 94120.

In these sentences, the commas are used to correctly separate the date and location information in sentence 1, and the location and postal code information in sentence 2.