The author's writing in Paragraph 1 ("At bottom ... chance") is characterized by the use of
Responses

short sentences that accentuate key facts and opinions
short sentences that accentuate key facts and opinions

series that broaden the scope of the discussion
series that broaden the scope of the discussion

adjectives used as nouns to criticize different groups
adjectives used as nouns to criticize different groups

dashes to indicate hesitation
dashes to indicate hesitation

abstract language to obscure his point