In the following passage some words have been deleted. Fill in the blanks with the help of alternatives given. Select the most appropriate option for each blank.

Listening plays (1) ______ role in the interactive process of business transactions. It enables a person to gather proper and (2) ______ information so that he can understand the matter with clarity. For this, he should have a positive attitude towards the speaker and the (3) ______. He should also (4) ______ on what is being spoken and then evaluate it with reference to the (5) ______.

Select the most appropriate option to fill in blank number 1.