Final answer:
The altitudes at which the balloon was observed four or more times are not specified in the question. Therefore, it is not possible to provide the altitudes for all four times. The option to choose is D) Ignore the question.
Step-by-step explanation:
It mentions the balloon being at "some altitudes" at "four or more different times" but doesn't provide the actual data. Therefore, it's impossible to determine the altitudes for all four times (Option A) or for two or three times (Option B or C). The correct response is to ignore the question (Option D) due to the absence of crucial details. In order to address the inquiry accurately, the altitudes and corresponding times need to be provided. Without this information, any attempt to answer would be speculative and not grounded in the details necessary for a precise response.