Option A is the correct answer because ‘demonstrate’ means ‘to
show and explain’. Thus, option A is the most appropriate meaning for the given
paragraph.
Option B is incorrect because ‘remonstrate’ means ‘to protest’ whereas ‘demonstrate’
means ‘to show and explain’. Thus, option B is not the appropriate meaning for
the given paragraph.
Option C is incorrect because ‘witness’ means ‘to see something taking place’
whereas ‘demonstrate’ means ‘to show and explain’. Thus, option C is not the appropriate
meaning for the given paragraph.
Option D is incorrect because ‘experience’ means ‘to get involved or feel
something’ whereas ‘demonstrate’ means ‘to show and explain’. Thus, option D is
not the appropriate meaning for the given paragraph.