The someone who do civil works in buildings is called ?

Choice l1

3 / contractor

The someone who do civil works in buildings is called Contractor  

non

I saw that the answer (Contractor) is not precision because that he in charge to perform all activities, not civil works only.

So,the closer answer is (non of above )    

CONTRACTOR

Non above

thanks for invitation >>.

No.3 because who do the civil works is the constructor and his workers..

Engineer & Architecture 

1 owner because it is not necessary to do all works by Contractor. Small works can be carried out the owner by directly engaging the labour and providing necessary materials.