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

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

Marsupials can be defined as the mammals that do not have placenta. They are viviparous animals who give birth to young embryo whose development takes place outside the female body inside the external pouch known as marsupium. In North America, the only marsupial found is the opossum. They are omnivores which have a very wide array of diet options.

Hence, the correct answer is 'Option A - opossum'.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint