The word that has same meaning as the italicized word in both the sentences is Option B, Open. Open means available and not limited. It also means being honest and not keeping secrets. The context of sentence I is that he is very open or honest in his dealings with others. Sentence II means that the offer of the job is still open or is available.Option A, 'due' means expected. Option C 'honest' means sincere and truthful. Option D 'plain' means simple. Option E 'operating' means controlling functioning of some machine or system. Thus, options A, C, D and E are incorrect to be used in both the given sentences and the correct option is option B, Open.