Which of these actions would be the ideal one to invest based on the Beta co$-$efficient?

AAPL$-\mathrm{.}2604$

MCD$-\mathrm{.}5681$

WMT$-1\mathrm{.}5925$

KO$-1\mathrm{.}0064$

GS$-1\mathrm{.}3526$

MRK$-\mathrm{.}4530$