It would be the girls’ dogs since there are multiple owners of the dogs. You keep the girls plural and use the apostrophe at the end to make it girls’ since it is both plural and possessive.
Mass- triple beam scale
Volume- graduated cylinder
Density- find the mass and the volume of the object. Divide the mass by the volume.
Hope this helps!
The answer is either B or D
I believe it is the third option. I feel like it should be written in numerical form, like November, 16, 1961.