Concept:The Wurtz-Fittig reaction is used to prepare alkyl benzenes by coupling an aryl halide with an alkyl halide in the presence of sodium metal and dry ether.Explanation:In this reaction, an aryl halide reacts with an alkyl halide in the presence of sodium metal and dry ether to form an alkyl benzene.The sodium metal removes the halogen atoms and joins the aryl and alkyl groups together.The general reaction is:C6​H5​Br+CH3​Br+2Nadry ether​C6​H5​CH3​+2NaBrHere, bromobenzene reacts with methyl bromide to form toluene, which is an alkyl benzene.This confirms that the Wurtz-Fittig reaction is the correct method.The other reactions cannot form an aryl–alkyl carbon bond.The Swartz reaction is used to prepare alkyl fluorides from alkyl chlorides or bromides using AgF or SbF3​.The Sandmeyer reaction converts diazonium salts into aryl halides using cuprous halides.The Finkelstein reaction is a halogen exchange reaction used to convert alkyl chlorides or bromides into alkyl iodides.Hence, only the Wurtz-Fittig reaction gives alkyl benzene.Answer:The correct option is D. Wurtz Fittig reaction.