Which is the only vegetable or fruit that is never sold frozen, canned, processed, cooked, or in any form other than fresh?

avocado

watermelon

bananas, because of the shape.
this is BIT of an "urban legend" thing because you can get slices of banana in some mixed fruit cocktail tins, and also you can get dried bananas, both the ones that look all black and sticky and 'rotten' and the crispy banana 'chips'.

You can also get banana fritters: http://southernfood.about.com/od/doughnutsandfritters/r/bl90626d.htm (mashed)
and banana beer (Charles Wells of Bedford, and someone in Prague for two), and banana bread https://en.wikipedia.org/wiki/Banana_bread

Lettuce can be made into soup, though I can't find it commercially, but Arpy is right about it being frozen - that's why they call those tasteless green things Iceberg. (Baloo prefers his lettuce to stand up and fight...)

Watermelon can be souped, but again I can't find it commercially. This would put it within the scope of the question. (But see below...)

Avocados are used processed in guacamole and cosmetics. https://en.wikipedia.org/wiki/Avocado

I wondered about durians, but they ferment them (the mind boggles slightly).

Unfortunately for the watermelon advocates (including me until I looked them up) "Grilled watermelon, known as watermelon steak due to its visual similarity to raw steak, has started to become a popular item in restaurants." https://en.wikipedia.org/wiki/Watermelon

Any more ideas? (The question probably looks for lettuce or banana or watermelon if it's off the radio.)

I'm very curious as to who eats frozen lettuce and how. We always throw it out if it accidentally freezes. I nominate wilted lettuce as the only way to consume lettuce other than fresh. My mom would make it occasionally, but it wasn't very popular with us. The lettuce isn't actually cooked, but how could you call it fresh?

http://allrecipes.com/Recipe/Wilted-Lettuce-Salad/Detail.aspx

Bananas are processed, and almost all tropical fruits eventually find their way into a can. I can't eat it, but I've been served canned tropical fruit bowls from Delmonte. Most or many tropical fruits are also fermented by the locals.

My son-in-law suggests the radish as being consumed only fresh, though we wonder if in the Orient it might be made into a paste or sauce. Wiki mentions steaming "tougher specimens." :-)

https://en.wikipedia.org/wiki/Radish

Maybe scallions.

They can get cooked in stir-fries but the question only asked for SOLD in fresh form.

SOLD!! I missed that detail.

Here are freeze-dried scallions for sale at $4/oz.

Can anybody disqualify lettuce or radishes? What form are they SOLD in that isn't entirely fresh?

(If restaurant food is considered SOLD, I know radishes are grilled. Pickled, too. I don't think we should include restaurants.)

Never say never.
Why? Cos...
http://www.21food.com/offerdetail/14544/Canned-Lettuce.html

There's also something called Lamb's lettuce soup.