The only incorrect answer is definitely the last one. In contast\ comparison sentences we never highlight difference like this. Even if he used commas, thw word ''however'' would be irrelevant. It's D Reese likes watching television specials on insects—however—Laney like
Efficient<span> (adj.) – Performing or functioning in the best possible manner with the least waste of time and effort. The </span>difference between effectiveness and efficiency<span> can be summed up shortly, sweetly and succinctly – Being </span>effective<span> is about doing the right things, while being </span>efficient<span> is about doing things right.
hope this could help.</span>
Imagery because it makes it visual in a way.
