Directions: Fill blank (2) with the appropriate word from the given choices.

A bot is a software that ___ (1) ___ human behaviour on the internet. Bots can be used to create ___ (2) ___ accounts on social media, provide numerous likes on a particular page, send tweets or visit various websites without any human involvement. Bots already constitute a significant percentage of Non Human Traffic (NHT) online and have, according to some estimates, ___ (3) ___ human traffic. Malicious traffic, malware, hacking attempts, viruses slow down the internet and ___ (4) ___ legitimate traffic and services. Used to target systems, NHT generates fake clicks on advertisements to increase website statistics. One of the ___ (5) ___ of ignoring artificial web traffic is that it gets counted for real impressions for which clients end up paying.