A. using this playfair matrix: j/k c d e f u n p q s z v w x y r a l g o b i t h m encrypt this message: i only regret that i have but one life to give for my country. quizzlet

Explanation:

To make it create a matrix with the letters provided without using the letter J. Then organize the message to be encrypted in pairs omitting the spaces and using a letter X if two letters are the same or if you have and an odd number of letters. Select each pair of letters to encrypt them one pair at a time, using the matrix paint a rectangular box around the letters to code them select the opposite letter in the rectangular box.  

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