Which of the following is the only marsupial found in north america?

a.
opossum
b.
duckbilled platypus
c.
pseudoscorpion
d.
wood frog

Option A

Explanation:

Opossum is a marsupial found in North America.They are called as possum in North America.  It is endemic to Americas. It has more than 103 species in 19 genera.

Opossum basically originated in South America and entered North America following the connection between the two continents. They suited best in the environment and climate of North America.

is this a psat question, if so do not cheat try your best.

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u