I’d say c but don’t quote me lol
The Congress, of course, must rightly keep itself informed at all times of the progress of the program. However, there is certain information, as the Congress itself will readily recognize, which, in the interests of our own security and those of the nations that we are supporting, must of needs be kept in confidence.
You can learn about Rosa parks from books, articles.
Tense is the answer
hope this will help
