Explanation:

- Original sentence: "Life is hard, unpredictable, but though manageable."

- The sentence structure seems off because "but though" creates redundancy.

- Option 1: still controllable

- Suggests life can be directed or managed despite difficulties.

- Replaces “though manageable” with more natural phrasing.

- Correct: Creates a consistent contrast with “hard, unpredictable” and implies resilience.

- Option 2: despite practicable

- "Despite" and "practicable" don’t logically fit here.

- Creates awkward phrasing.

- Option 3: although bearable

- "Although" offers a weaker contrast.

- "Bearable" implies mere tolerance, not management.

- Option 4: though achievable

- Suggests life is a goal, not a continuous process.

- Misinterprets the intended contrast.