What does Lexicology, a brunch of linguistics study?

What do we mean by derivation?

1. 
   It is a structural type of Modem English words.
   
2. 
   It is a process of developing English words.
   
3. 
   It is one of the most productive ways of word-building.
   
4. 
   It is a way of forming a new meaning.
   
5. 
   It is a process of producing a new sounds.
   

10. 
    Which categories of parts of speech are especially affected by conversion?
    

1. 
   The three categories affected by conversion are verbs, nouns and adverbs.
   
2. 
   The category of parts of speech affected by conversion is nouns.
   
3. 
   The category of parts of speech affected by conversion is verbs.
   
4. 
   The two categories of speech affected by conversion are nouns and verbs.
   
5. 
   All categories of pairs of speech are affected by conversion.
   

11. 
    Metaphor, metonymy, hyperbole are....
    

1. 
   types of grammar change.
   
2. 
   types of literary change.
   
3. 
   types of semantic change.
   
4. 
   types of general change.
   
5. 
   types of morphological change.
   

12. 
    By borrowing (or loan-word) we mean a word which came...
    

1. 
   into the vocabulary of one language from another language.
   
2. 
   into the vocabulary of many languages from one language.
   
3. 
   into the stock of words of different languages from any foreign language.
   
4. 
   into the vocabulary of one language from 2 or 3 other languages.
   
5. 
   into tire vocabulary without any changes.
   

13.