Looking at your periodic chart, what is the function of the staggered line?

 the main  function of the staggered line  is to separate metas from non metals.

Explanation:

This one separates the elements to the right and left.

To the right hand side of the periodic table , lies the stggering line that eventually looks like a staircase.

To the left of it lies thye metals while on the right are the non metals .

Those that touch the line are called the metalloids , this is because they tend to display metallic and non metellic characteristics .

i think it's b or c hope this

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.