Correct Answer - Option 3 : Extract
Educe means ‘to bring out or develop (something latent or potential)’. ‘Educate’ is completely irrelevant and ‘exert’ is to apply a force that is again not a suitable synonym. ‘Extend’ is making larger which is not synonymous to educe. Thus, the correct answer is ‘extract’ which means to take out something with effort. Hence, option C is the correct one.