Some nouns that end in –sis are made plural by changing the –sis to –ses. why is this?
a. they have greek origins and therefore have irregular plural forms.
b. they have latin origins and therefore have irregular plural forms.
c. they have spanish origins and therefore have irregular plural forms.
d. there are no words that change forms like that in english.

The answer is:

a. They have Greek origins and therefore have irregular plural forms.

This noun that have greek origins have irregular plural forms like analysis, its plural form is analyses, diagnosis, diagnoses. These are greek words that we use in our day to day life.

the author is showing that it is the insatisfaction of basic needs that brings about the protests such as the strikes.if workers do not earn enough to buy food and feed their families and themselves in order to continue working, what is the use of working? besides, another message from the author is that of the owners of factories should be worried about ensuring their furure by having a second and third generation of workers in their industries.if they do not hear the workers demands, they will not have any more workers to make their pockets full.

one is a red flower, and one is the sky when the sun sets.