'Sacred' in the context of the Headmaster means

Directions: Read the passage given below and answer the question by selecting the most appropriate option.

1. This was one of the Old Man's pet schemes; and one about which he would brook no interference. Each child would review the events of his school week in his own words, in his own way; he was free to comment, to criticize, to agree or disagree, with any person, subject or method, as long as it was in-some way associated with the school. No one and nothing was sacred, from the Headmaster down, and the child, moreover, was safe from any form of reprisal.

2. "Look at it this way," Mr. Florian had said. "It is of advantage to both pupil and teacher. If a child wants to write about something which matters to him, he will take some pains to set it down as carefully and with as much detail as possible; that must in some way improve his written English in terms of spelling, construction and style. Week by week we are able, through his reviews, to follow and observe his progress in such things. As for the teachers, we soon get a pretty good idea what the children think of us and whether or not we are getting close to them. It may sometimes be rather deflating to discover that a well-prepared lesson did not really excite Johnny Smith's interest, but, after all, the lesson was intended to benefit Johnny Smith, not his teacher.