Which variable would be considered the response variable?

$\backslash$table$[[$Time$,0,0,2,3,5,6,7,9,11,12],[$Fish Quality,$8\mathrm{.}5,8\mathrm{.}4,8\mathrm{.}0,8\mathrm{.}1,7\mathrm{.}8,7\mathrm{.}6,7\mathrm{.}3,7\mathrm{.}0,6\mathrm{.}8,6\mathrm{.}7]]$