Which of the following people is observing one of the five pillars of islam?
a. a student studies hard to earn a place as an adviser to a sultan.
b. a store owner gives away some of his most valuable goods to the poor.
c. an emperor conquers many different countries to prove himself as the most powerful muslim.
d. a priest studies islamic holy books but does not believe that prayer is necessary.

B. A store owner gives away some of his most valuable goods to the poor.

Explanation:

The Five Pilars of Islam are the basic things every Muslim must satisfy in order to have a good and responsible life.

In this case by giving away his goods, the store owner is following the Zakat or the giving of alms. They think that wealth must be shared with those in need in their community of believers. So by giving the poor his goods he is helping them.

The other pillars are:

- The Sahadah or profession of faith

- Salat or daily prayers

- Saum, in which they fast during Ramadan

- Hajj or peregrination to Mecca

so what is your question?

food chain i would say only because there is competition on getting food and survival