1 character=1 byte
32 bit word= 4byte
4800 bytes in 1 sec
so for 1 byte it takes 1/4800 sec
so for 4 byte word it takes 1/1200 sec
so 1200 words are transfered in 1 sec through cycle stealing
and given 1 million instructions are fetching and executing in 1 sec out of which 1200 words are executing through cycle stealing so
%of slow down or cycle wasted in dma transfer = (1200/1000000)*100
=0.12%
option b)