、。
Can you imagine what life would be like without electricity?
Literal
If electricity [subject-が] is-not [conditional-と], we [genitive-の] life [subject-が] what kind-of-thing [target-に] become [embedded-question-か] imagine-can [polite-question-ますか]?
A long but transparent conditional + embedded-question structure. もし...と is the hypothetical conditional ('if...'). Inside the embedded question どのようなものになるか, the question word どのような ('what kind of') marks the unknown, and the matrix verb 想像できる ('can imagine,' potential of 想像する) treats the whole clause as its object. もし is optional but signals the conditional more clearly to the listener.