What are characteristics of reliable science? bias and controlled variables controlled variables and small test groups empirical data and bias replicable results and empirical data

The correct answer is 'Replicable results and empirical data'.

For science to be reliable, the scientific method must be replicable and the data must be empirical.

When scientists publish their work they write enough data so that scientists all over the world can replicate their experiment and get same results.

Also the scientific method is based on empirical data which is based on direct observation of the world and is contrary to hypothesis that do not rely on facts.

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