Answer:
Pilgrimage (Hajj)
Step-by-step explanation:
Profession of Faith (Shahada)
Prayer (Salat)
Alms (Zakat)
Fasting (Sawm)
Pilgrimage (Hajj).
These are the 5 pillars of Islam and is necessary for all Muslims.
The Shahada is said by a person that wants to convert to Islam and he/she says "There is only one God and Mohammed is his prophet". Once this is said before a Muslim witness, it is accepted that he is already a Muslim who have said these words.
Every good Muslim is required to give alms (Zakat) to the poor frequently. Thus, benevolence and philanthropy is highly encouraged.
Pilgrimage to Mecca is required from every good Muslim, to go to the holy city and pray.
Ritual prayer of Salat five times a day is also necessary for every good Muslim.
Muslims are also mandated to fast at intervals to show submission and reverence to the Almighty. One example of Muslim fast is Ramadan.