A. Nonconductor
B. Instructive
C. Constructive
D. Destructive
✅ The correct answer is option A.
Instructive : useful and informative.
Instructive : useful and informative.
Constructive : serving a useful purpose; tending to build up.
Destructive : causing great and irreparable harm or damage.
Nonconductor : dielectric, insulator
Dielectric : having the property of transmitting electric force without conduction; insulating.
Synonym of Dielectric is Nonconductor.