What assurance did she give about difficulties?

The assertion that there would be no difficulty conveys a strong sense of confidence and reassurance regarding potential challenges. When someone guarantees that there won't be any difficulties, they are essentially implying that everything will proceed smoothly and without obstacles. This kind of assurance can be very comforting, as it sets an expectation for an easy experience.

In contrast, the other options imply varying degrees of difficulty or uncertainty. For instance, recognizing that there would be several difficulties suggests a clear acknowledgment of challenges ahead. Mentioning that it would be quite challenging indicates an expectation of significant obstacles, while stating it may be problematic introduces a sense of doubt or unpredictability. Therefore, the assurance of having no difficulties stands out as the most positive and affirming statement regarding the situation at hand.