$1\mathrm{.}1.$ In this abstract$,$ it is stated that data collection was based on primary data, by using closed

$(10$ marks$)$ ended questionnaire as the main research instrument.

Provide the reasons why a close ended questionnaire was suitable for this study

$1\mathrm{.}2.$ Provide the difference between the primary data and secondary data

$(10$ marks$)$

$1\mathrm{.}3.$ As an advice to the authors, explain the five ethical considerations that should be taken into account

$(20$ marks$)$ during the research study