Which of the following makes the demonstration most persuasive？A) To read through glas

Which of the following makes the demonstration most persuasive？

A) To read through glass, blindfolded.

B) To identify the eol0ar and shape of light on a screen while securely blindfolded.

C) To carry out the test with someone pressing on her eyeballs.

D) To work from behind a screen, blindfolded and with a card round her neck.