Semi-colon or comma?

Semi-colon or comma?
We can use a semi-colon to separate two clauses if they are in some way related to each other and if both clauses could make sense on their own. If one part of the sentence doesn’t make sense on its own, use a comma. Tick and cross these sentences to show if the correct punctuation has been used.
Key stage: Year 6, 11+, KS2
Subject: 11+, Grammar, English