The IUPAC name of compound

Step-by-step solution

1. Identify the principal functional group: The -OH group is the principal functional group, so the suffix is '-ol'. 2. Identify the parent chain/ring: The compound contains a five-membered carbon ring, so the parent name is cyclopentane. 3. Number the ring: Numbering starts from the carbon atom attached to the -OH group (C-1) and proceeds in the direction that gives the lowest locant to the substituent. Thus, the carbon with the ethyl group gets position 2. 4. Identify substituents: There is an ethyl group ( -C₂H₅