What will most benefit a CPU-constrained VM?
the installation of a third-party management tool in the guest OS
the installation of the vmxnet virtual adapter
a decrease in the CPU-limit value
an increase in CPU shares
The values Low, Normal, High, and Custom are compared to the sum of all shares of all virtual machines on the server. If you increase CPU shares for this VM, it will gain proportionally more resources, improve performance and reduce CPU contention. Therefore D is correct.