Answer

Консоль выведет:

"Ford Mustang"

Объяснение:
Подробнее про this + "use strict": https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode#Securing_JavaScript

Код для проверки:

"use strict"
const carDetails = {
    name: "Ford Mustang",
    yearBought: 2005,
    getName(){
     return this.name
    },
 isRegistered: true
}

console.log(carDetails.getName())