As a researcher do we need to use the different type of interview ? why ?

what can you explain the question better plz

Explanation:

his week a heat wave will be hitting, and most of the country will be experiencing temperatures above average for july. due to humidity, the temperature outside can feel even warmer than it actually is. this adjusted temperature, often referred to as the “feels like” temperature is called the heat index. the chart shows the heat index, which is calculated based on temperature and relative humidity. use this chart to answer the following questions.  

take a nice, long walk. walk, feel the wind through your hair and your it is very relaxing.