those = the ones （それら） It's not hard. Q. You add THE team skills like ______ you get from playing sport. Therefore: "those", or "the ones".

Technically, in classic English grammar, you should never use 'ones'. Because there can only be one ONE. So technically, you should only ever say 'those'. Using 'those ones' is only colloquially acceptable.

the "____" term references team skills. You can use the "____" term as an abbreviation which refers to the "_____" team skills as a whole, or you can use the "____" term to substitute for "team skills." In the first case, which sounds better: You add to the team skills like those team skills you get from sports or You add to the team skills like ones team skills you get from sports? If you answer is the first, then "those" becomes an abbreviation for those team skills and you get: You add to the team skills like those you get from sports. Or you can replace "team skills" with "ones" in this sentence: You add to the team skills like the team skills you get from sports Then you get: You add to the team skills like the ones you get from sports. By the way, if you want to learn nuance in the English language you might try reading good fiction. This is because there is generally a wider range of vocabulary used in fiction than in non-fiction. So they say anyway in this article about vocabulary size in The Economist: https://www.economist.com/blogs/johnson/2013/05/vocabulary-size Plus, good fiction holds your attention, so you will be able to read more and learn more new words for this reason as well. I find that to be the case for myself anyway.

I'm sorry I put a mistake in the text above. × i.e) My answers are different from that of my friends. ↓ ✓ i.e) My answers are different from those of my friends.