It looked like the others were willing to trust Rita's answer (well, Taura was. It was still uncertain whether Goku even knew what was going on), and so there was no time to waste.

Straightening her shoulders, Rita addressed the creature in a firm voice. "We've decided. The answer is leaves."

As an intellectual, it was going to hurt her ego a lot if she turned out to be wrong. Fortunately, Rita was pretty confident in her reasoning. This wasn't going to end in a fight.