Which point of Calvinism emphasizes that God's choice in electing people for salvation is solely His own?

The point of Calvinism that emphasizes that God's choice in electing people for salvation is solely His own is Unconditional Election. This doctrine asserts that God's selection of individuals for salvation is not based on any foreseen merit or action on their part; rather, it is an act of His sovereign will and grace. According to this belief, God elects certain individuals to salvation without any conditions or requirements that they must fulfill beforehand.

This concept is central to the understanding of God's sovereignty in Calvinist theology, underlining the belief that salvation is entirely a work of God's grace and not dependent on human effort. This reinforces the idea that no one can claim credit for their salvation, as it is entirely the result of God's choice and plan.

In contrast, while Total Depravity addresses the fallen state of humanity and the inability of individuals to choose God on their own due to sin, it does not directly pertain to God's electing choices. Limited Atonement speaks to the scope of Christ's atoning sacrifice, and Perseverance of the Saints focuses on the enduring nature of salvation for the elect, which again does not touch on the nature of God's election itself.