Which sentence demonstrates the correct use of an apostrophe? a sea star is an echinoderm because it’s body has five sections that are arranged around a central disk. sea star’s spines are made of calcium carbonate plates, which protect the creature from birds, fish, and sea otters. close observers will notice that, though sea stars appear to float, they’re actually propelled by tiny tube feet. sea stars have an amazing ability to drop their arms when threatened by a predator—but then regenerate new one’s

Close observers will notice that, though sea stars appear to float, they’re actually propelled by tiny tube feet.

Explanation:

In the chosen sentence, the apostrophe is used to make a contraction of the verb are with the subject pronoun they.

The rest of the options are incorrect because in the first sentence the spelling should be its (possessive adjective) instead of it's (it is); in the second alternative the right spelling should be stars' spines, since it stars is a plural noun; while in the last statement the correct version is ones, as it refers to arms.

you have approval for this story

explanation:

and also the mystery girl it might be someone that she might know in her school

in other words

to put it differently

for one thing

as an illustration

in this case

for this reason

to put it another way

that is to say

with attention to

by all means

important to realize

another key point

first thing to remember

most compelling evidence

must be remembered

point often overlooked

to point out

on the positive side

on the negative side

with this in mind

notably

including

like

to be sure

namely

chiefly

truly

indeed

certainly

surely

markedly

such as

especially

explicitly

specifically

expressly

surprisingly

frequently

significantly

particularly

in fact

in general

in particular

in detail

for example

for instance

to demonstrate

to emphasize

to repeat

to clarify

to explain

to enumerate