What is a mastermind?

[Jon]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #89 "Verbal Learning", question 3

I have no wish to ......... these criminal activities but I do have some sympathy with the perpetrators.

(a) condone
(b) concede
(c) console
(d) conduct

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #89 "Verbal Learning", answer 3

I have no wish to condone these criminal activities but I do have some sympathy with the perpetrators.

Correct answer: (a) condone
_________________________

Hello,

I understand that the perpretarors are the people performind the action. But how do you say the ideological creator, the mind of the action???

Thanks in advance !!

[Lost_Soul]

mastermind, ringleader