<span>What is the first line of defense against a deadly collision?
it should be the ability to pay attention. </span>
Since the services were already rendered, your payable amount account would increase because you still have to pay it off, and it would be "able to get payed" or "payable". This can be proven because A is talking about the money the person rendering services to you would increase, C is talking about literal paper money, and D talks about taking out money, an action that you would normally do when someone renders services and payment is required on the spot because you are able to take out only what you have in the bank.
This is true that not all messages on the internet are received because of the challenges from the router and the physical internet. The reason of this is first, a small percentage of packets are lost during the transmission due to faults in the infrastructure of the Internet. This packets are small chunks of information that have been carefully formed from larger chunks of information. When these packets arrive out of order, the entire message can be accurately reconstructed.
Second reason is the absence of transmission control protocol (TCP). This is vital for this will provide reliable and error-checked delivery of a stream of packets on the internet for it divides larger messages into smaller packets which have ordering information.