The correct nomenclature for the following compound is 

1. Principal Group Priority: Carboxylic acid ($$-\text{COOH}$$) outranks aldehydes ($$-\text{CHO}$$), alcohols ($$-\text{OH}$$), and alkenes ($$\text{C}=\text{C}$$). The parent suffix is -oic acid.
2. Chain Numbering: Numbering begins at the carboxylic acid carbon ($$\text{C-1}$$) and extends along the longest continuous chain containing the double bond ($$\text{C}=\text{C}$$).
   • This gives a 7-carbon chain (heptane) with the double bond starting at position 6. Thus, the parent name is hept-6-enoic acid.
3. Substituents: * At C-2: $$-\text{CHO}$$ acting as a prefix is named formyl.
   • At C-4: $$-\text{OH}$$ acting as a prefix is named hydroxy.

Alphabetical Arrangement:

Combining the terms alphabetically (formyl before hydroxy):

2-formyl-4-hydroxyhept-6-enoic acid

Correct Option: B