I'm not sure what the excerpt is but the answer is most likely Tense. I hope this helped you!
Answer:
What is the question? if you tell me I'll answer it in the comments :)
Answer: They indicate that Nixon had plans for domestic and international improvements.
Explanation:
On August 8, 1968, in his acceptance speech at the Republican convention in Miami Beach, Florida, Nixon shared his enthusiasm that the hostility with the Soviet Union will be eased. In this particular excerpt, he claims that the<em> "era of negotiation"</em> begins. This indicates that Nixon strove for domestic, but also international improvements. He wanted to improve the United States' foreign relations.
I'm pretty sure it'd be A.
