Which among the following elements has the highest electronegativity?

An element which never has a positive oxidation number in any of its compounds is:

Among $Me_{3}N$,$C_{5}H_{5}N$ and $MeCN$ $(Me = \text{methyl group})$,the electronegativity of $N$ is in the order:

The polarity of a covalent bond between two atoms depends upon

The relative order of electronegativity of $C$,$Ge$,and $Pb$ is

Given below are two statements :
Statement $I$ : The electronegativity of group $14$ elements from $Si$ to $Pb$ gradually decreases.
Statement $II$ : Group $14$ contains non-metallic,metallic,as well as metalloid elements.
In the light of the above statements,choose the most appropriate from the options given below :