Answer:
A) Carbon is your answer. Hope this helps :)
I believe that the examination of the ages at which children achieve motor milestones show that there are wide variations in the ages at which infants begin to sit, walk, and crawl. Developmental milestones are the skills such as taking the first step, smiling for the first time, and waving which vary differently from one child to another. Children reach milestones in how they play, learn, speak, act, and move. For example, between the ages of 9 to 12 months, children begin to achieve physical milestones such as standing up or even walking.
Answer:
This question is incomplete; the complete part is asking whether the statement about the independent variable is; True/False
The correct answer is False
Explanation:
In an experiment, the independent variable is the variable that the experimenter controls or manipulates in order to effect a change or bring about a response. The variable that responds to this manipulation is the dependent variable.
In this experiment involving Brittany, who is investigating how fast Brian will react to three different sounds, the independent variable is the DIFFERENT SOUNDS because that's the variable that Brittany changes in order to effect a response I.e. how fast Brian will react. Hence, the time it takes brian to react is rather the dependent variable.
