Select the word segment that substitutes (replaces) the bracketed word segment correctly and completes the sentence meaningfully.
In a general (business sense, logistics is the managing flow) of things between the point of origin and the point of consumption to meet requirements of customers or corporations.

Correct option is A

The correct replacement is option (a).

Explanation:

• The bracketed phrase should define logistics using a correct noun structure.
• “the managing flow” is grammatically incorrect. We need management of the flow (noun + of-structure).
• Option (a) forms a correct and standard definition: “logistics is the management of the flow of things...”

Why other options are incorrect:

• (b): Changes the subject-verb agreement to “logistics are” and uses an awkward continuous form; formal definitions prefer the noun phrase “management”.
• (c): “managing of flowing” is grammatically incorrect and meaningless.
• (d): Not correct because the bracketed part contains errors.

So the correct answer is (a)