i chose 4, BUT ..
at this point, many folks, esp in developed countries, have all manner options for playing with time.
i expect too many for me to recall very well. for starters:
medicine, including surgeries, impact length of life, and quality.
euthanasia is extreme. abortion is extreme. but, too much to try to list.
agriculture, good diets, impact time, and quality.
abusing drugs impacts time+quality.
risk-taking. driving. smoking. smartphones.
i think there is a lot of playing with time. not always recognized as such in the moment.
my 4 grandparents passed in their early 70’s,
and younger. my parents lived quality lives until 80 and 88.
that’s quite a difference in one generation.