Respuesta :
The pillar of Islam that Alex has engaged in is the giving of Alms to the poor.
What is alms giving?
This is one of the pillars of Islam where a devout Muslim is required to help the needy that are in the society.
A devout Muslim is required to live by the 5 pillars of Islam. They are requirements that must be fulfilled in the Koran in their lifetime.
Read more on Islam here:
https://brainly.com/question/1214743