Question 30: Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions: Electric wires carry current for lighting and outlets designing for household appliances.
designed => are designed
Explanation: Electrical outlets are designed for household electrical appliances – use the passive voice, this clause is separate from the previous one because it does not use the same carry verb, so it lacks a verb, because it is used in the passive, we have to add to be. .
Electrical wires that conduct electricity for lighting and electrical outlets designed for household electrical appliances.