Cold calls and telemarketing have become less popular over time, primarily because their success rate is fairly.
Answer: Option A
Step-by-step explanation:
Cold calls are basically random telephonic or mobile calling for advertising the products to the call attainder while telemarketing is advertisement by launching clips, videos and images through different TV channels.
But now they have become less popular overtime because their success rate is fairly. Now internet banking and UPI services promote online shopping with savings and cashback, provide more employment and easy to access.