To establish something by evidence is to do what?

To establish something by evidence means to provide proof or confirmation that supports the validity of that claim. The term that aligns with this definition is "substantiate." Substantiation involves presenting facts, evidence, or arguments to uphold or reinforce a point, making it a crucial concept in legal contexts where evidence must support claims made in court.

The other options do not carry the same meaning. For instance, to "negate" means to invalidate or nullify something, which is the opposite of establishing it. "Detract" refers to taking away from the value or quality of something, and "dispose" generally relates to getting rid of or discarding something. None of these terms involve the act of providing evidence or confirmation, making "substantiate" the only correct choice for establishing something by evidence.