Which four words cause the "ali" to drop from aliquis/aliquid?

When dealing with Latin words, "aliquis" and "aliquid" mean "someone" and "something," respectively. The use of certain conjunctions can influence the way these words are formed within a sentence.

The conjunctions "si" (if), "nisi" (unless), "num" (whether), and "ne" (that not) have a special syntactical effect on the pronouns "aliquis" and "aliquid," causing the "ali" prefix to drop. This happens because these conjunctions introduce conditions or negations that allow for a more streamlined expression of uncertainty or hypotheticals, ultimately leading to a more concise form of the pronouns used.

The other options do not include the correct set of conjunctions that drop the "ali" prefix. While they may contain valid Latin conjunctions, they do not all influence the form of "aliquis" and "aliquid" in the same way. The understanding of which conjunctions affect these words is essential when constructing sentences or translating Latin, particularly for expressing conditional statements or general questions.