それに・それで: the difference
それにN4
Meaning
And, Besides, Moreover, In addition
Past papers
Tested 2 times in past papers
Example
運動は楽しいです。それに体にいいです。
Exercise is fun. In addition, it's good for you.
それでN4
Meaning
Because of that, So?, And then?, Therefore, With that
Past papers
Tested once in past papers
Example
「それでプロジェクトどうなったのですか？」「期限通りに終わりました。」
'And then, what happened to the project?' 'We finished it on time.'
How to tell them apart
Good and bad must match: after a plus come more pluses, after a minus more minuses. It is never used for contrast.
Compare the connectors: 「それに」 adds (besides); 「それで」 gives cause (so); 「それから」 gives order in time (and then); 「そして」 is a more formal 'and' or 'then'.
In a fill-in question, when the next sentence is another equally good (or equally bad) point, choose 「それに」.