Answer:
4
Explanation:
Semi colons are used for 2 independent sentences which are related.
Option 1 is WRONG because the words after the semicolon is not an independent sentence. If a "colon" was used here, it would be correct.
Option 2 is WRONG because of the same reasoning above, but using a "colon" here would still be wrong.
Option 3 is WRONG of the same reasoning for option 2.
Option 4 is CORRECT because it has 2 independent sentences combined with a semicolon which the topics are also related to eachother.
Hope this was helpful.
