Which of these statements about cells is correct? A) Adult cells are larger than those in a child.

B) Cells must produce their own food.

C) Organisms must have more than one cell to grow.

D) Multicellular organisms can have more than a billion cells.

A) Adult cells are larger than those in a child.

Explanation:

Fully-grown adults are much larger in size than young children. 

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3