Ans has ,reason അറിയുമോ
one of ayathu kond singular verb..optionil 2 singular verb und is, has.. verb ntae 3rd form(passed)ayathu kond ans has varolu
One of my friends is singular. And hence has. If it was some of my friends, it is plural and hence have.
eg: He is one of the soldiers who fight for their country. The noun after one of the is always a plural.