Explanation
Custom geocoding means that you assign latitude and longitude coordinates toyour locations so Tableau can plot them accurately.
Refer:https://help.tableau.com/current/pro/desktop/en-us/custom_geocoding.htm

Automatically add phone layouts
Two options let you automatically add phone layouts:
To create phone layouts whenever you open old dashboards that lack them, choose Dashboard > Add Phone Layouts to Existing Dashboards To create phone layouts whenever you create a new dashboard, choose Dashboard > Add Phone Layouts to New Dashboards. (This option is on by default.) Refer: https://help.tableau.com/current/pro/desktop/en-us/dashboards_dsd_create.htm

First, find the distinct sports for each country:
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It will be created as a Measure, move this to Dimension
Get the distinct countries:
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drop these columns to the view, final view will look like this:
The X-axis represents a number of distinct sports. As the data set contains data from 2000 to 2012, so even if you don't include the filter, your answer would remain the same.
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Option 1 - It is not valid, as we are not showing Columns Totals on Top.
Option 3 - It is not valid, as we are modifying the row divider settings and not the column divider settings.
Rest are true.

Select the 'Elevation' field from measures, and go to show me. Click on Histogram.
Right-Click on the "Elevation (bin)" dimension and select Edit. Change the size of bins to 1000.
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Drop the Total Death to Label.
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The total number of deaths reported in the bin of 2000.
Note that the lower limit is inclusive. So 2000 bin means 2000 to 2999.