Context: This organism is Danio rerio. It is a member of the animal kingdom.
Danio rerio is commonly called a zebrafish. Young zebrafish are see-through! Scientists can easily observe their insides. This trait makes zebrafish a useful organism for scientists to study.
Does Danio rerio have cells that have a nucleus?
A. no
B. yes
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

B