Question

if retro means \back\ and spec means \to see or look,\ what is the best definition of the phrase in retrospect in the sentence below?
in retrospect, i probably should have taken better notes on that topic.
○ in regretting the past
○ in respecting the past
○ in anticipating the past
○ in considering the past

Explanation:

The prefix "retro - " means "back" and "spec" means "to see or look". So "retrospect" means looking back. "In regretting the past" has an extra emotional connotation (regret) not indicated by the word parts. "In respecting the past" has a different meaning (respect) not from the word parts. "In anticipating the past" is illogical as you can't anticipate (look forward to) the past. "In considering the past" fits as looking back (from word parts) can be considered as considering the past.

Answer:

in considering the past