Answer:
d. reinforcement                                                               
Explanation:
Reinforcement: In psychology, the term reinforcement refers to the phenomenon of strengthening of a particular stimulus to increase the probability or likelihood of a particular response. 
Example: A girl gets a new dress whenever she performs well in her studies.
Reinforcement is of two different types including the negative reinforcement and the positive reinforcement.
In the question above, the given statement signifies the reinforcement.
 
        
             
        
        
        
The correct answers are the following.
In a normal-sighted individual, the lens will focus images perfectly on a small indentation in the back of the eye known as the fovea.
We are talking about Vision System's anatomy. If we think about vision, the first thing that comes to our minds is the eye. We see through the eye. The cornea is an important component of the vision because the light comes in and the cornea transmits it through the pupil. The cornea serves as a transparent barrier to protect the inner eye from the external elements. 
 
        
             
        
        
        
Answer:
Factors of production example for manufacturing pencil 
Explanation:
Four factors of production are :
Land, Labour, Capital, Entrepreneur 
Examples in case of manufacturing a pencil : 
Land : Factory land required, Capital : Funds required for fixed factor (eg machine) & variable factor (eg  raw material - wood), Labour : People required to work on machines with raw material (wood), Entrepreneur : The person supplying managerial skills for pencil' enterprise operation. 
 
        
             
        
        
        
Answer: <em>Option (A) is correct.</em>
Explanation:
It is given that the survey is anonymous i.e. it will not keep track of any codes, names, or other personal information. With this, the researcher is addressing one of the most important issues in planning the research, i.e. The confidentiality of an individual response with respect to the data provided by him/her. 
 
        
             
        
        
        
Answer:
Onload event
Explanation:
Derek Young wants to create a page that would have several dynamic effects. For instance, he wants a clock that shows how long the user has been viewing a page, plus he’d like a welcome message and a goodbye message on the page. He also has a list of links that should run his functions to update parts of the page. Derek will most likely use onload event to display his welcome message?