Which choice best describes the following sentence?

cal earned extra credit in science class by volunteering at the aquarium on weekends.

it is a complete and correct sentence.
it features a comma splice.
it is a fused sentence.
it is a rambling sentence.

It's to know your purpose before you read something because a purpose can:

Skill check questions rearrange the paragraphs below into the correct sequence. that's because engineers on the ultraclean project have invented a self-cleaning, antibacterial metal surface that repels water with an intricate layer of laser-engraved valleys. when it rains, the lotus does not become damp; the water simply trickles off in fat droplets, taking any bugs and dirt with it. the drudgery may not be around much longer, however, if a team of italian scientists has anything to do with it “it's simply an amazing plant,” concluded professor luca romoli, leader of the project, “and we've succeeded in mimicking it. magnifico! ” few tasks in life hold less joy than scrubbing the ghost of somebody else’s porridge from a saucepan. the starting point for the research was the leaves of the lotus flower.

What is the definition of scathing? a. to assail with abusive language c. to deter by advice or persuasion b. bitterly severe, as a remark d. the west wind; a mild wind