Which element has the maximum ferromagnetic character?

The outer electronic configuration of $Gd \ (At. \ No. \ 64)$ is

Which of the following transition metal ions has a magnetic moment of $3.87 \ BM$?

Given below are two statements:
Statement $I$: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement $II$: The number of unpaired electrons in a $Cr^{2+}$ ion $(Z=24)$ is the same as that of a $Nd^{3+}$ ion $(Z=60)$.
In the light of the above statements,choose the correct answer from the options given below:

Identify the ferromagnetic element from the following.

Which of the following pairs of ions are colored in their aqueous solution?