Adecimal outline is an outline that uses notations such as

A). 1.1, 1.2, and 1.3.

Explanation:

Outline, in general, is described as the series or list to exemplify the key points or topics of content or subject. There are varied types of outlines like the numeric, alpha-numeric, decimal outline, etc. that are employed for different purposes.

If decimal outline, in particular, is concerned it is employed to link each outline/point to the central content(whole) where each element contributes to accomplishing the whole. In the given question, a decimal outline would be regarded as the outline that employs numeric notations with decimals to present a complete whole by connecting each element to achieve the whole. Thus, option A is the answer as it exemplifies decimal notations.

can you give some possible answers

- the heat nearly killed them that first summer.