The most appropriate sequence for planning poker estimation for story points in Agile is typically a modified Fibonacci sequence to reflect the uncertainty and complexity of different tasks.

Option 2, "0, 1, 2, 3, 5, 8, 13, 21, 40, 100, 8," is a commonly used sequence and is more aligned with Agile estimation practices. It includes smaller numbers for simpler tasks and then larger gaps for more complex and uncertain tasks.

Options 1, 3, and 4 are not as commonly used in Agile planning poker for story point estimation.