Which of the following lists is a sequence of counting numbers?

The sequence of counting numbers is defined as the positive integers starting from one and increasing by one each time: 1, 2, 3, 4, 5, and so forth. This sequence is an infinite list, and it does not include zero or negative numbers.

The choice identified as correct comprises only positive integers beginning from 1, making it fit perfectly within the definition of counting numbers. Additionally, this sequence's unbroken progression of whole numbers clearly demonstrates what counting numbers are all about.

In contrast, the first option includes zero, which is not part of the traditional definition of counting numbers. The third option consists of decimal values, which do not represent counting numbers as they are not whole numbers. The fourth option incorporates a negative number, which also disqualifies it from being a sequence of counting numbers. Thus, the correct choice is indeed the one that begins with 1 and lists positive integers only.