Abstract:
First of all I would like to thank almighty Allah hose contribution does not depart from me
and his help to me during the time of duing my study.
Secondly, my great appreciation and thank goes to my research advisor Mr. AmantiBarufor
his excellent constructive comments, guidance and for consuming his time for advising me in
excellent manner to working this senior essay successfully. Thirdly, I would like to thank all
of my family members who help me financially and through their ideas. Fourthly, I would like
to thank also all respondents who providedinformation for the study. Finally, I would like to
thank my best friends, especially Mukhtar Ali and SalihaYaseen, for their supportwhen I
wasdeveloping this senior essay and also those who have not mentioned their name but
contribute a lot this achievement.
