31. Iron deficiency is one of the commonest causes of anemia ----.A) since even in a good diet the supply of iron is only just adequate
B) why adolescents outgrow their stores of iron
C) which would result in brittle nails
D) although new ways of treating pernicious anaemia were soon introduced
E) as numerous iron preparations are available for treatment
Choice A was
suggested as the right choice by one of the respected writers in Turkey; however, I couldn't find any cause and effect relationship between these clauses. To me, C seems to be a better choice. What would you go for?
Thank you very much in advance.
PS: Meanwhile, if A was written as below, I would accept it:
The supply of iron is only just adequate even in a good diet; [COLOR=blue]therefore, a wide range of people experience iron deficiency[/COLOR], which is one of the commonest causes of anemia.[/B]
The question is also being discussed
http://www.dilforum.com/forum/showthread.php?goto=newpost&t=668 in Turkish language.