In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.
Collect or form into a mass or group
The correct word here is 'Agglomerate.' The meaning of this word is to collect or form into a mass or group.
Congested => so crowded with traffic or people as to hinder or prevent freedom of movement.
Furtive => attempting to avoid notice or attention
Delirium => an acutely disturbed state of mind characterized by restlessness