The things that are to be done before creating a research question for a presentation are: option C, D, and E.
<h3>What is a 
research question?</h3>
A research question can be defined as an issue, event or subject of inquiry that a researcher is keenly and deeply interested to provide a response or an answer to, when conducting a research.
Basically, the things that are to be done before creating a research question for a presentation are:
- Review the research topic and what the prompt asks for.
- Think of an argument or an opinion if necessary.
- Consider what I know and what I need to know.
Learn more about research question here: brainly.com/question/10129052
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<em>"Associate with people who are likely to improve you."</em>
 
        
             
        
        
        
Answer: There answer is 0.125
Step-by-step explanation:
If you divide the fraction you will see
 
        
                    
             
        
        
        
Answer: norm of reaction
Step-by-step explanation: 
norm of a reaction which is the capacity of a genotype to produce different phenotypes in response to the environment. The group of phenotypic expressions under different environmental conditions. A organism can own all the genetic complements necessary to fully development. However, if there is no suitable nutricion, the development does not occur. The environment only changes the phenotypic characteristics within certain limits ruled by the genotype (norm of reaction). The genotype do not determine a phenotypes, but a amount of possible phenotypes, a norm of reaction. A certain phenotype will  materialize itself depending on the interaction of a certain genotype with the environment.
 
        
             
        
        
        
Answer:
19
Step-by-step explanation:
Inscribed Angle = 1/2 Intercepted Arc
< DBG = 1/2 ( DG)
< DBG = 1/2 ( 360 - BD - BG)
            = 1/2 ( 360 - 172 - 150)
            = 1/2 (38)
            = 19