Least amenable to screening is -

Ans. is 'd' i.e., Lung Park states - 'At present there are only two techniques for screening for lung cancer viz, chest radiograph and sputum cytology. Mass radiograpy has been suggested for early diagnosis at six monthly intervals, but the evidence in suppo to this is not convincing, so it is not recommended. It is doubtful whether the disease satisfies the criteria of suitability for screening".