Reusable modules, which are represented in the structure chart as rectangles with vertical lines on both sides, may often appear several times in a structure chart. these are called modules. group of answer choices
a) library
b) control
c) loop
d) conditional

The answer to this question is the option "A".

Explanation:

In this question, the answer is option "A" which is the library. The term library stands in programming language for library made available across implementations of a programming language. In the programming section library is a collection of pre-compiled modules that a program can use and modules are stored in object format. We can reuse these modules in our program. So the answer to this question is the library.

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