Which sentence does not contain any errors in comma usage?
a. in a pool or at a beach, lifeguards are often on duty.
b. in a pool or at a beach lifeguards are often on duty.
c. in a pool, or, at a beach, lifeguards are often on duty.
d. in a pool, or at a beach, lifeguards are often on duty.

What point is the author trying to make by comparing the travel times of the first transcontinental railroad and the first transcontinental flight?

Hamlet act 1 what task does king claudius give to cornelius and voltemand?

Answer fast. read the excerpt below and answer the question. i will tell you the tale of my wanderings and of the “herculean” labors, as i may call them, which i endured only to find at last the oracle irrefutable. socrates’ use of the word “herculean” in this excerpt from the apology is an example of what literary device? allusion metaphor onomatopoeia simile