The most important thing you can do with the little bit of preparation time you may have for an impromptu speech is
a. make sure you look presentable
c. write an outline
b. try to hide
d. ask people questions

c. write an outline

Explanation:

Impromptu speech refers to the speech which is delivered without any preparation or prior information. The topic is provided to the speaker can be in any form. In the competitions held in the high schools, the candidate is provided with a topic. Also, he gets a certain time to prepare his speech. The student prepares an outline of his speech before delivering it.

beneatha's hair symbolizes wealth  

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a-he encouraged islamic schools to introduce greek texts.

d-he invited greek scholars to teach their texts to the locals.

explanation:

the transmission of the greek classics to latin western europe during the middle ages was a key factor in the development of intellectual life in western europe.[1] interest in greek texts and their availability was scarce in the latin west during the earlier middle ages, but as traffic to the east increased so did western scholarship.

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