Choose the TRUE sentence based on the text.

Analysis:

Let's analyze each option based on the provided text:

• 1) Alla likes studying Geography. The text states: "These are my least favorite subjects!". Biology and Geography are mentioned as her least favorite subjects, so this sentence is false.
• 2) She has to prepare for some tests. The text explicitly says: "I will have tests in Biology and Geography next week." This sentence is true.
• 3) She got a good mark for the test two months ago. The text states: "The test two months ago was a disaster." This sentence is false.
• 4) Alla doesn't like studying only one subject. The text mentions that Biology and Geography are her least favorite subjects, implying she dislikes at least two subjects, but it doesn't provide enough information to confirm or deny if she dislikes *only one* subject or if she dislikes more than just those two. The most direct and undeniably true statement is about her upcoming tests.

Therefore, the only definitively true sentence based on the text is that she has to prepare for some tests.