Final answer:
The interval notation that represents all numbers from -6 to 1, without including these numbers is (-6, 1), thus, the correct answer is A.
Step-by-step explanation:
The student is asking about the correct interval notation that represents a set of numbers from -6 to 1 without including these end points. The correct interval notation for this is (-6, 1), which means that both -6 and 1 are not included in the interval. The parenthesis denotes that the endpoints are not part of the set, as opposed to brackets which would indicate that the endpoints are included. Therefore, the correct answer to the question is A. (-6, 1).