Why does the sawfly not select wheat?

The conventional method of breeding for resistance includes:
$I$. Screening the germplasm for resistant sources
$II$. Hybridization of selected parents
$III$. Selection and evaluation of the hybrids
$IV$. Testing and release of new varieties
Choose the correct option.

Regarding mass selection,which statement is most suitable?

Briefly describe various steps involved in plant breeding.

In case of plant breeding,cross hybridization is a time-consuming and tedious process because:

Which method is used to develop all the cultivated varieties of sugarcane?