During the Trial of a Suit Concerning Liability for an Accident

Multiple Choice

During the trial of a suit concerning liability for an accident involving Cartage Ltd. and Docking Inc., the plaintiff's attorney presents evidence from Emma, a commercial accident reconstruction specialist. With respect to the evidence in the case that falls within Emma's field, she can

A) prevent other witnesses from testifying.
B) describe only what she personally observed.
C) testify only about the facts.
D) offer her opinions and conclusions.