Which organisms undergo carnegie stages? a lizard b sheep c snail d worm you can choose more than one answer!

The correct answer is- B sheep.

Carnegie stages can be described as the standardized system of 23 stages corresponding to the chronological events that occur during the development of vertebrate embryo.

For instance, stage one relates to unicellular embryo that is formed by fertilization ( fusion of male and female gamete).

Thus, out of the given options, sheep ( which is a vertebrate) undergo Carnegie stages.

it would lead to upper respiratory infections and pneumonia.