Answer: c) Hold on to her identity
Explanation:
Holding onto identity displays the characteristic of representing what an individual actually is. Qualities, beliefs, thoughts, emotion etc remain same as that person holds in their personality no matter where the person is or whatever age he/she turns into. 
According to the question,Brenda is showing that she still holds her identity because she chose picture of her mother and her as valuable item .
Other options are incorrect because value of antique is not shown by her choice rather her relation with her mother is valuable to Brenda. Being young and featuring same as her mother is also not displayed through question's scenario..
Thus, the correct option is option(c).
 
        
             
        
        
        
When all the brain activity stops then the donated organs can be removed.
Answer: Option B
<u>Explanation:</u>
In all the industrialised nations of the world, the people who have donated organs in their bodies which were put in place of their own organs can be removed from their bodies if they die. 
But it can not be immediately removed, they can only be removed when the activity of the brain of the dead body totally stops. Before this, the donated organs can not be removed.
 
        
             
        
        
        
Answer: c) predictive validity
Explanation: predictive validity refers to how likely an event is to happen
 
        
                    
             
        
        
        
Answer:
The on-line research strategies that raises the most concerns regarding ethical principle of respecting the autonomy of research subjects and the corresponding federal regulations requiring informed consent are: C) and D).
Explanation:
C) A researcher observing an open support group whithout announcing her presence is an alteration of both respecting the autonomy of the research subjets and also doesn´t consider the regulations requiring informed consent.
The subjects should know they are being subjtect of a research, to see if they agree or not. The researcher by not annouincing her is not respecting their autonomy to decide.
D) If a researcher poses to be a survivor from cancer when not, to be able to get closer to people that are; she is violating both the respecto for autonomy on the research subjects and also she is braking the informed consent. 
 
        
             
        
        
        
Answer:
The trees that have a thick, waxy coating on their surface of their needles, are found in the Taiga biome. The plant diversity is less in such ecology. The most common types of trees are the conifers. 
Adaptation of waxy coating and needles help them to retain water, and protect them from cold. 
 I hope I can help you