:What is the name of the organic compound whose structural formula is shown here?A) EthaneB) EtheneC)PropeneD) Propane

We see that we have two carbon atoms. The nomenclature for two carbon atoms is Eth.
We also have a single bond between the two carbon atoms accompanied by hydrogens, so it is an alkane, so the name will be ethane.
The answer will be A) Ethane