Read the sentence.

theodore roosevelt the twenty-sixth president of the united states was the youngest president to ever hold office.

which revision of the sentence is now properly punctuated?
a. theodore roosevelt, the twenty-sixth president of the united states, was the youngest president to ever hold office.
b. theodore roosevelt the twenty-sixth president (of the united states) was the youngest president to ever hold office.
c, theodore roosevelt the twenty—sixth president of the united states—was the youngest president to ever hold office.
d. theodore roosevelt, the twenty-sixth president of the united states was the youngest president to ever hold office.

a. Theodore Roosevelt, the twenty-sixth president of the United States, was the youngest president to ever hold office.

Option A is correctly punctuated. The revision options all try to solve the problem of the appositive phrase "the twenty-sixth president of the United States". This phrase better clarifies or defines who Theodore Roosevelt is. The phrase is extra information. Because it can be eliminated from the sentence and the sentence still make sense, it should be surrounded by commas. Appositive phrases are most often surrounded by commas to indicate where the phrase begins and ends. None of the other options are punctuated correctly.

i took this test im trying to remember i think it is the first one im super sorry if i remembered wrong!

the answer would be, she updates her online profiles regularly and participates in work-related online discussions.