Question

20. Choose the correct variant.
1. five day's investigation
2. two years's education
3. three months' vacation
4. an hour's operation​

Answer 1

Ответ:

The correct variant is:

3. three months' vacation

The possessive form is used to show that something belongs to or is connected to something else. In this case, we are talking about the vacation belonging to or connected to three months. Therefore, we use the apostrophe after the word "months" to indicate possession.