Who among the following is/was a famous proponent of

In a certain code language, ‘STEM’ is written as ‘56’, and ‘BRAG’ is written as ‘27’. How will ‘GRIM’ be written in that language?

What is the code for “political interview”?  

Which of the following can be the code for 'funds’ in the given language?

If 'THRASH' is coded as 'UGSZTG', how will 'HEAD' be coded?

What is the code for ‘spread you’ in the given code language? 

RKEHXO

In a certain code language, ‘FRENCH’ is written as ‘GQFMDG’. What will be the code for ‘HAMPER’ in that code language?

In a certain code 'GIVEN' is coded as '285' and 'MADE' is coded as '92', then what is the code for ' MOBILE '?