The given compound is

The correct option is Alicyclic.

Step-by-Step Explanation:

1. Analyzing the Image:
The provided image shows a line-angle structural representation of a six-membered carbon ring containing a single double bond. This structure represents cyclohexene, which has the molecular formula:
$C_6{H}_{10}$

2. Understanding Alicyclic Compounds:
An alicyclic compound is an organic compound that is both aliphatic and cyclic. This means:
• Cyclic: The carbon atoms are joined to form one or more closed rings.
• Aliphatic: The compound does not possess aromatic character, and its chemical properties and behavior closely resemble those of open-chain aliphatic hydrocarbons (such as alkanes, alkenes, or alkynes).

3. Evaluating Cyclohexene:
Since cyclohexene contains a ring structure (making it cyclic) and contains a single carbon-carbon double bond whose reactivity is characteristic of aliphatic alkenes (rather than the resonance-stabilized aromatic rings), it is classified as an alicyclic hydrocarbon.

4. Why the other options are incorrect:
• Aromatic: Aromatic compounds must be cyclic, planar, fully conjugated, and contain:
$(4n+2)$
delocalized $\pi$-electrons (where $n$ is a non-negative integer). Cyclohexene is not fully conjugated and has only 2 $\pi$-electrons, so it is not aromatic.
• Antiaromatic: Antiaromatic compounds are cyclic, planar, fully conjugated, and contain $4n$ $\pi$-electrons. Since cyclohexene lacks a fully conjugated ring system, it cannot be antiaromatic.
• Acyclic: Acyclic compounds are open-chain molecules that do not contain any ring structures. Because cyclohexene contains a ring, it is cyclic, not acyclic.