The correct answer is B) Greek. Hope this helps.
        
                    
             
        
        
        
<span>The story of North American exploration spans an entire millennium and involves a wide array of European powers and uniquely American characters. It began with the Vikings’ brief stint in Newfoundland circa 1000 A.D. and continued through England’s colonization of the Atlantic coast in the 17th century, which laid the foundation for the United States of America. The centuries following the European arrivals would see the culmination of this effort, as Americans pushed westward across the continent, enticed by the lure of riches, open land and a desire to fufill the nation’s manifest destiny.</span>
        
             
        
        
        
Answer:
Explanation:
The idea that birds evolved from dinosaurs has been around since the 19th century, when scientists discovered the fossil of an early bird called Archaeopteryx. By doing so, they have managed to create a chicken embryo with a dinosaur-like snout and palate, similar to that of small feathered dinosaurs like Velociraptor.
 
        
             
        
        
        
Answer:
cross-sectional                                               
Explanation:
Cross-sectional design: In psychological research, the cross-sectional design is referred to as one of the types of "observational study design". A researcher or experimenter while conducting cross-sectional research or study tends to investigate or study the various exposures and outcomes in the different participants or subjects involved in the research at the same time. 
In cross-sectional study design, the participants involved in the study differ in "variable of interest" yet share a few characteristics.
In the question above, the researcher is employing a cross-sectional design to her study.
 
        
             
        
        
        
Answer:
Accidental reinforcement
Explanation:
Accidental reinforcement occurs when a reinforcer casually concurs with a positive outcome, so the person associate the outcome with the reinforcer. This type of reinforcement is usually the source of superstitious behaviours.
In this case, Roger associated the fact of wearing green underwear to the good grade he got in his test, the green underwear was the reinforcer that casually concurs with the positive outcome which in this case was the good grade, so Roger started associating both and now he wears green underwear on test days.