Some have cell walls with lipopolysaccharide.
a. archaea
b. bacteria
c. both archaea and bacteria

b. Bacteria

Explanation:

Cell walls with lipopolysaccharide are present in gram Negative bacteria. Gram-negative bacteria have an outer membrane in their cell wall which is composed of lipopolysaccharides.

The lipopolysaccharides are the molecules that have both lipids and proteins. The lipopolysaccharide layer that forms the outer membrane of Gram-negative bacteria is present outside to their thin peptidoglycan layer.  

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