I will sit this one out!
A and B doesn't get along very well. Therefore, C said, "They can't go on like this ! We have to do something to help....". D said, " I will sit this one out".What does "i will sit this one out" mean here? Thanks!

Question

I will sit this one out!
A and B doesn't  get along very well. Therefore, C said, "They can't go on like this !  We have to do something to help....". D said, " I will sit this one out".What does "i will sit this one out" mean here? Thanks!

Answer

I will sit this one out = I will not take part in this = I will not interfere.
Literally, this phrase to mean that the person will not take dance for one song at some party or dance.  
("Would you like to dance?"  "I'm a little tired, I think I'll sit this one out.")
In normal conversation, it means that the person will not involve themselves in some effort or struggle.

Verpassen Sie nicht die Gelegenheit, bequem von zu Hause aus eine Sprache zu lernen. Stöbern Sie in unserer Auswahl an erfahrenen Sprachlehrern und melden Sie sich jetzt zu Ihrer ersten Unterrichtsstunde an!