The principles of probability can be used to
a. decide which organisms are best to use in genetic crosses.
b. predict the traits of the offspring of genetic crosses.
c. determine which species should be used in genetic crosses.
d. determine the actual outcomes of genetic crosses.

Option B, predict the traits of the offspring of genetic crosses

Explanation:

Lets see an example -

Suppose there are two adult cats , where female cat has brown (BB)haired and it is a dominant trait while male cat is recessive grey (bb) haired organism.

If a cross is carried out between these two species then through probability it can be derived that how many species will be grey (Bb) haired

Let see the punnet square for the cross-

BB

bBbBb

bBbBb

Thus out of four offspring’s produced all the offspring’s are grey (Bb) colored. Thus, there is a 100% probability that if a cross is carried out between female cat having brown hair (BB) and a male cat having black hair (bb), the offsprings will have grey (Bb) hair.

In this way probability can help to predict the traits of the offspring of genetic crosses