Answer:
D efficient,
Explanation:
reading the question we'll basically be replacing fast for one of the words below that were given
A. large kinda makes sense but not fully
"microwaves are not large or cost effective"
B. useful doesn't fit as it's saying microwaves were affective
so we dont need to try putting it in
C. advanced
"microwaves are not advanced or cost effective"
Microwaves, or portable ovens are decently advanced
so that leaves D
Efficient - being able to do plenty of productive with little resource
"are not efficient and cost effective"
they are rather pricey and the take a bit of resources and materials to craft so D makes the most sense
The most accurate and precise replacement for the underlined word is "efficient". (option D)
Even though no word is underlined in the sentence, we can still select "efficient" as the best option. The reason for that is the fact that when an appliance works faster and is more cost-effective, we always describe it as being efficient.
Efficient means the appliance is capable of doing its job without taking much time and without consuming much energy or electricity. That is precisely what "fast" and "cost effective" in the sentence refer to.
With the information above in mind, we can select option D as the best answer.
Learn more about replacement of words here:
https://brainly.com/question/2192812
