Final answer:
Cost-effectiveness is not a concern with relying completely on cloud computing, unlike security vulnerabilities, data accessibility, and dependence on internet connectivity.
Step-by-step explanation:
The answer to this question is c) Cost-effectiveness.
While there are several concerns with relying completely on cloud computing, cost-effectiveness is not one of them. Cloud computing offers a more cost-effective solution compared to traditional on-premises infrastructure because it eliminates the need for upfront hardware and software investments. With cloud computing, businesses only need to pay for the resources they actually use, which makes it a more flexible and affordable option.
On the other hand, security vulnerabilities, data accessibility, and dependence on internet connectivity are valid concerns when relying on cloud computing. Security vulnerabilities can arise due to the risk of data breaches and unauthorized access. Data accessibility can be affected by factors such as internet outages or limited connectivity. Finally, dependence on internet connectivity means that without a stable internet connection, access to the cloud services and data may be disrupted.