The answer is (a). your welcome
A boundary separating two masses of air with different densities. It is the principal cause of the odd weather patterns and phenomenons outside of the tropics.
Answer: Apparent
Explanation:
Apparent movement is the motion which is in the form of optical illusion in which an object or item appears as if they are moving or are in motion. Flashing of any still or constant image in rapid motion at different places makes it appear as if they are moving from one location to another location.
According to the question,John is experiencing apparent movement in which scrolled text is seen by him but actually its the stationary lights are flashed in on and off motion to make it look like it's in motion.Therefore which is creating optical illusion for him.
Four-year-old nathan has not wet his bed for over a year. however, he starts bed-wetting again soon after his sister is born. Nathan’s behavior best illustrates Regression.
Regression is a statistical technique used in finance, investment, and other fields to determine the relationship between a dependent variable (usually denoted by Y) and a set of other variables (known as independent variables). We try to assess strengths and characteristics.
In statistical modeling, regression analysis is a set of statistical processes for estimating the relationship between a dependent variable and one or more independent variables.
Example: We say that age and height can be described using a linear regression model. A person's height increases with age, so there is a linear relationship. Regression models are often used as statistical evidence for claims about everyday facts.
Learn more about Regression here
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