Carbohydrates, such as starch and fiber, contain much longer carbon chains than their shorter, simpler counterparts. These long chains are made up of the same basic material, simple carbohydrates. This means that the long carbohydrate chains are really just polymers of simple ones.
a) true
b) false

True

Explanation:

Long carbohydrates or polysaccharides are made of joining carbohydrates or sugar units. Monomer of carbohydrates are glucose. In starch, two glucose units are joined by α 1,4 linkages. In starch, linear units and branched units both are present.  

Linear units are called amylose and branched units are called amylopectin.  

Branched units linked to linear unit by 1,6-alpha glycosidic bonds.

Therefore, its can be said that long carbohydrate chains are really just polymers of simple ones. So, the given statement is true.

the answer is 0.42 is that is an option. this question provides no info