Respuesta :
Before we begin answering, let us define discrete and continuous variables.
Discrete Variables: A discrete variable is a variable that can be obtained by counting. Examples of these are "the number of marbles in a bag", "students grade level", etc.
Continuous Variables: A continuous variable is defined as a variable that can take an uncountable set of values or an infinite set of values. In other words, it is a variable whose value is obtained by measuring. Examples are "height of students in class", "distance traveled between classes", etc.
OPTIONS
Option A: Continuous Variable.
The intensity of sound, or loudness, can only be gotten by measurement.
Option B: Continuous Variable.
Length is measured, not counted, and so it is continuous.
Option C: Discrete Variable.
We are counting each accident that happened, so it is discrete.
Option D: Discrete Variable.
Each chromosome can be counted, so it is discrete.
