Answer: The following is one of the friendship rules identified in a study by communication researchers Michael Argyle and Monika Henderson:
B. Don't be jealous of your friend's other friends.
Explanation:
Michael Argyle and Monika Henderson conducted a study and were able to identify rules for successful friendship, one of those rules was, "Don't be jealous of your friend's other friends." 
In "The Rules of Friendship" Journal of Social and Personal Relationships (1984), Argyle and Henderson found some of the following 'rules', "...“should not be jealous of other’s relationships,” “help in time of need,” “respect the friend’s privacy,” “confide in each other,” and “stand up for the other person in their absence."
 
        
             
        
        
        
Answer:
Using convenience samples to develop constructs and scales can be risky.
Explanation:
Convenience sampling refers to the process of gathering information from a sample that is conveniently available to the researcher (family members, friends in social media). This is not a random sampling method because not all of the members have the same probability to be selected. 
- Using convenience samples to develop constructs and scales can be risky.
From the definition, we can say that using convenience samples to develop constructs and scales can be risky since <u>the information gathered by using this sampling does not necessarily represent the characteristics of the population (since it was not chosen at random).</u>
- It is a time-consuming process when there are a large number of respondents.
This is not a time-consuming process but is actually easier to gather information this way rather than by other methods.
- It is commonly used in the later stages of research. 
This process is a gathering of information process and it takes place at early stages of the research 
- The representativeness of the sample can be measured because sampling error estimates are not calculated
As we said before, this is not a random sample and therefore it is not necessarily a representative sample. 
- It is commonly used to generalize results to the target population.
Although probably our sample shares some characteristics with our target population, this sampling is not used to generalize results to the target population. 
 
        
             
        
        
        
<u>Answer:
</u>
'An air puff in the eye elicits an eye blink' is the statement that illustrates a US-UR pair.
Option: (B)
<u>Explanation:
</u>
- When an event generates an unconditioned stimulus, it is often followed by an unconditioned response spontaneously.
- This kind of stimulus is usually unavoidable and makes the subject vulnerable to respond in a specific manner that is expected for the type of stimulus received.
- The correlation between US and UR is characterized by the input-output link that is apparent in any given event.
 
        
             
        
        
        
Answer: economic growth
Explanation: Economic growth is an increase in the capacity of an economy to produce goods and services, compared from one period of time to another. It can be measured in nominal or real terms, and the factors that influenced economic growth are human resources, physical capital, natural resources and technology. Furthermore, to determine economic growth, the GDP is compared to the population, also know as the per capita income.