Which is not a limitation associated with longitudinal research? the aging of the participants losing participants over time changing historical context participants becoming aware of the goals of the study and changing their behaviors or answers

The answer is - changing historical context

Step-by-step explanation:

Longitudinal research is a research that involves studies involving the same individuals and observing them to understand the long term effects of changes in products, environment on behavior, attitude, etc.

This research can extend over a period of decades.

The answer is - changing historical context

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions