The correct answer is D. 1 second.
A batch is a group of tasks that are executed together. The time elapsed after a batch is created is the time it takes for all of the tasks in the batch to be completed. This time can vary depending on the number and complexity of the tasks in the batch.
Option A, 0.5 seconds, is too short. It is unlikely that all of the tasks in a batch would be completed in 0.5 seconds.
Option B, 0.05 seconds, is even shorter than option A. It is even more unlikely that all of the tasks in a batch would be completed in 0.05 seconds.
Option C, 1.5 seconds, is longer than the correct answer. It is possible that all of the tasks in a batch would take 1.5 seconds to complete, but it is not the most likely scenario.
Therefore, the correct answer is D. 1 second.