In the question below, a sentence is given with two portions marked in bold. Choose the best replacement (if needed) for the highlighted portion to make the sentence meaningfully and grammatically correct. In case no improvement is needed, mark option (e) as your answer. An expatriate often refers to authorities , skilled workers, or artists taking positions outside their home country, either effortlessly or sent abroad by their employers, which can be companies, universities, governments, or non-governmental organisations.         

The first part of the sentence talks about 'expatriate'; the word 'authorities' is not consistent with the other nouns mentioned, i.e., 'workers' and 'artists', which are professions. The second highlighted word does not suit the context of the sentence; it is used in parallel with 'sent by employers'. The words 'admirers' and 'wizards' are unsuitable to replace the first highlighted word as they do not suit the context of the sentence and render the sentence meaningless. Hence, options (a) & (b) are eliminated. The word 'severally' is not suitable to replace the second highlighted word as it does not align with the context of the sentence. Hence, option (c) is eliminated.