Answer: In any case, tea with milk or with lemon juice is always a delicious choice.
Step-by-step explanation: This sentence ties all of it together because it tells the reader that both lemon and milk are good options to add to tea. Not leaving either add on out of the sentence.
If you use the first or second choice, you would be limiting the concluding sentence to either milk or lemon juice, not both.
The last choice gives more options but not the ones you are talking about.