Question $16$

Given the following $$ function, what is the most reasonable definition for $?$

$(q_0,)=(q_0,,R)$

$(q_0,a)=(q_0,x,R)$

$(q_0,b)=(q_0,y,R)$

$(q_0,c)=(q_0,z,R)$

$,=\{a,b,c\}$

Impossible to determine, machine does not halt.

$=\{a,b,c,x,y,z,\}$

$=\{q_0\}$