Decentralization enables divisions of a large institution to function autonomously. This always permits more realistic planning and strongly encourages innovation, since the people responsible for decision making are directly involved in implementing the policies they design. Decentralization also permits the central administration to focus on institution-wide issues without being overwhelmed by the details of daily
operations.

The statements above most strongly support which one
of the following?

(A) In large institutions whose divisions do not function autonomously, planning is not maximally realistic. Maximally is key word, which molds the tone of the statement as used in passage

(B) Innovation is not always encouraged in large centralized institutions. Very strong word: Not always

(C) For large institutions the advantages of decentralization outweigh its disadvantages. OFS. No mention of disadvantages
(D) The central administrations of large institutions are usually partially responsible for most of the details of daily operations. OFS. Very strong word: Most of the details
(E) The people directly involved in implementing policies are always able to make innovative and realistic policy decisions.
OFS. Very strong word:always

Therefore, A.