Which characteristic do most adult fungi and plants share? A - they're both producers B - both have cells with cell walls C - Both reproduce through Binary Fission D - Both have have multiple nuclei in each cell.

It is not A because: fungi are decomposers rather than producers.

It is B--both do have cells with cell walls.

Not C because: plants reproduce through pollination of flowers.

Not D because: neither have multiple nuclei in a single cell.