The presentation of Sermon is an obligation on the Imam when leading
Answer Details
The presentation of a sermon is an obligation on the Imam when leading Friday prayers. Friday prayers are a congregational prayer that Muslims perform in a mosque every Friday, and they consist of two rak'ah (units of prayer) preceded by a sermon. The sermon, also known as Khutbah, is a speech given by the Imam that usually discusses religious and moral issues, as well as current events and topics relevant to the community. The Khutbah is an essential part of the Friday prayer, and it is considered an obligation for the Imam to deliver it. So, the correct answer is "Friday prayers."