Which construction indicates the allegation made against the accused?

The choice indicating the allegation made against the accused is "is alleged that the accused had." This construction directly states that an allegation has been made regarding the accused. The phrase "is alleged" serves to present a claim without asserting it as a fact, reflecting the legal context's emphasis on allegations rather than convictions.

In legal terms, an allegation implies that something is asserted without proof, thus maintaining a level of neutrality and presumption of innocence until proven guilty. This aligns closely with how allegations are typically framed within a judicial process.

The other phrases, while they may imply speculation or belief regarding the accused, do not focus on the act of allegation itself. For instance, constructions that use "is believed," "is claimed," or "is said" suggest an opinion or a conjecture rather than a direct allegation. Therefore, "is alleged" best captures the essence of what it means to make an allegation against someone in a legal context.