A.I. Explanation:

Option 1: "They make traditional education methods obsolete"

Explanation: The text does not support the idea that language learning apps make traditional education methods obsolete. Instead, it suggests that these apps will complement classroom learning, indicating that traditional methods still hold value.

Option 2: "They are less effective than classroom learning"

Explanation: The text does not state that language learning apps are less effective than classroom learning. It emphasizes that these apps provide flexibility and are predicted to complement classroom learning, rather than being inferior.

Option 3: "They complement classroom learning with a blended approach"

Explanation: The text explicitly states that experts predict these apps will complement classroom learning, offering a blended approach to language education. This aligns with the main idea of the text, which highlights the positive impact of language learning apps on traditional methods.

Option 4: "They discourage self-paced learning"

Explanation: The text indicates that language learning apps provide learners with the flexibility to study at their own pace, which is the opposite of discouraging self-paced learning. Therefore, this option contradicts the information presented in the text.