Having a diversity of bacteria living in the gut may be important for people’s health. If you wanted to estimate the ave

[answerhappygod]

Having a diversity of bacteria living in the gut may be
important for people’s health. If you wanted to estimate the
average number of species of bacteria in people’s guts in Canada,
which of these surveys would likely have the lowest bias?
a.
A random sample of 1000 hospital patients.
b.
A random sample of 100 people across Canada, based on social
insurance number.
c.
A survey of 1000 people from Montreal.
d.
A survey of 5000 people who were recruited from an internet poll
about gut health.