录音开头女士建议买些有机蔬菜， 但男士认为太贵。 后面通过女士的话“We'll get some organic tomatoes, just to give them a try”可知， 女士最后建议先尝试一下有机西红柿。 因此选B项。

【录音原文】
W: Let's get some organic vegetables. My sister Amy says they really do taste better.
M: Maybe, but they're also more expensive. I was talking to Jason at work about this. I mean, yeah, he buys organic food, but his salary is also much higher than mine.
W: OK, let's do this. We'll get some organic tomatoes, just to give them a try. Then we'll see how we like them and go from there.