Commas punctuation marks should be the best to separate nonrestrictive phrases in sentences like - Martin was so proud to have run all 26.2 miles 41 kilometers of the New York City Marathon after training for an entire year.
What are Commas?
The comma is a punctuation mark that appears in several variants in different languages.
What is nonrestrictive?
These types of elements are used in which words meanings are completely clear that it does not want any other thing to justify its meaning.
Hence "commas "would be the best punctuation mark in this sentence
to know more about commas follow the link below
https://brainly.com/question/14009118
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