Answer:
A. A majority of scientists agreed with it
Explanation:
The famous theory called the theory of common descent, states that all the living organisms of the earth have arisen from a common ancestor. This notion was first proposed by a French mathematician,Louis Maupertuis duirng 1740s who was of the view that all organisms had a single ancestor and evolutionary process with the passage of time resulted in the specie diversification.
After that, in 1790s another philosopher Immanuel Kant, suggested that all organisms seem to have a common ancestor. In the same period of 1790s, another scientist , Erasmus Darwin who was the grandfather of Charles Darwin also suggested that all the organisms might have a single ancestor who went through the process of evolution to bring all the majesty into life.
Charles Darwin was the first scientist who worked on this notion for alot of time and proposed the theory of common descent,in his book, On the Origin of Species.
After it, many scientists got agree with this theory such as,  Vernon Kellogg in 1907 and T. Ryan Gregory in 2008 and many others explain that no reliable observations exists which contradicts the theory of common descent.
Therefore, option A is the best option.
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Experimentation (or the experiments the scientist was doing for 10 years) could be wrong or done in an inappropriate way. The only way to know if the information is valid is by checking the way the experimentation (data) was done as well as making sure to check all other factors
        
             
        
        
        
Answer:
In a nutshell, qualitative research generates “textual data”
Explanation:
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Answer:
Blood taken from an artery in the leg is oxygenated while blood taken from a vein in the leg is deoxygenated. 
 
        
             
        
        
        
Answer:
During interphase, a cell is metabolically active
Explanation:
Cell cycle is divided into two stages: interphase (lasts 3/4 of the cycle) and phase M (1/4 of the cycle).
Interphase is also divided into three stages: 
Phase G1
Protein and RNA synthesis is done.
Phase S
DNa synthesis is done.
Phase G2
Protein synthesis continues and the cell grows to start the division.