Which conjunction can be used to connect alternatives in a statement?

The conjunction that effectively connects alternatives in a statement is "either-or." This phrase is used to present two distinct options or choices, allowing the reader or listener to understand that one of the two presented alternatives must be chosen. For example, you might say, "You can either go to the movies or stay home," clearly indicating a choice between two possibilities.

The other options do not serve this purpose: "since" introduces a reason or cause, "though" is often used to contrast two statements rather than provide alternatives, and "also" adds information but does not connect choices or options in a manner that indicates one must be selected over another. Thus, "either-or" is the most suitable conjunction for connecting alternatives in a statement.