Final answer:
Option A correctly represents the set of numbers -199, -122, -126, -129, -133 on a horizontal number line as it includes all numbers within the range without unnecessary extensions.
Step-by-step explanation:
The question pertains to correctly representing the set of numbers -199, -122, -126, -129, -133 on a horizontal number line. To visualize these numbers on a number line, you need to determine which set of markers include all of these numbers without going too far beyond the smallest (-199) and the largest (-122) numbers in the set.
Option A) places -199 just before -200 and -122 just after -120, including all the numbers.
Options B) and C) extend beyond the necessary range, going past -200 or including -100, which is not needed. Option D) doesn't include -122, as it starts at -220.
Thus, the correct answer is Option A, which includes all the given numbers without extending beyond the needed range.