Answer:
The correct answer is - option A. A difference in the cultural display rules.
Explanation:
Social or cultural displays rules are a social cluster or group and informal cultural norms to express their emotions in the correct way which are specific to cultural or social groups.
Pedro is an exchange student which makes his social norms different than the social norms or cultural display rules which cause difficulties to deal with the people and classmates.
 
        
                    
             
        
        
        
The options aren’t there but here’s a few facts.
Genotypes are the alleles present in order to form a phenotype. A phenotype is the traits present based on the genotype or genetic code. For example, if you have two dominant alleles (which is a genotype)... let’s say C (as in the dominant allele stands for curly hair) Then if the genotype was CC or Cc the phenotype would be curly hair. If the genotype was cc than the phenotype would be straight hair.
        
             
        
        
        
Exocrine glands are the name of the gland that transports secretions through ducts 
        
                    
             
        
        
        
The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts). Astatine and tennessine are radioactive elements with very short half-lives and thus do not occur naturally.
        
             
        
        
        
The population(s) would be hurt if bears were added as bears are omnivores.
<h3>How do bears get the strength vitamins they need?</h3>
Plant ingredients make up the bulk of a bear's diet – every so often as plenty as ninety consistent with cent. However, fish and meat are vital reassets of protein and fat, aleven though maximum non-coastal bears depend upon carrion (along with winter-killed animals
- The maximum usually eaten styles of flowers are fleshy roots, fruits, berries, grasses, and forbs. If bears are at the hunt, their prey can consist of fish (particularly salmon), rodents like floor squirrels, carrion, and hoofed animals like moose, elk, caribou, and deer. 
- They are particularly exact at catching the younger of those hoofed species. Grizzly bears also can goal home animals like farm animals and sheep and reason economically vital losses for a few ranchers.
Read more about population:
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