Answer:
a) The cyclic structure of D-fructose is drawn in the attachment
b)The carbons in the ring are 4
c) The diagram is shown in the attachment
d)This can be classified as a reducing agent. This is because it contains aldehyde that are oxidized to carboxylic acid.
e) The D-fructose sugar has anomeric carbon which is an aldehyde or hemiacetal. In fructose, both anomeric carbons are in acetal functional groups
Explanation:
The explanations is attached.