A. Mark the text with an asterisk.
Explanation:
You can put an asterisk right at the point in the page where you feel the important information is while th<u>e other options are less efficient in that they do not help in retention of information or keeping a track of what was important.</u>
You can mark a page as important but only if you believe the whole page is important not just a line, an asterisk can give specificity to the text which it would need in time of revision.
Since its a sibling, and siblings tend to be in a person's close circle of people, informal speech is used.
I believe the answer is the last one:
<u>He was the clear choice to go to Baltimore. </u>
Abe
Cab
Dad
Gag
Fab
Beef
Gabe
Fade
For number two i thnk it is 2