Read the passage and answer the question. Astronomers from the University of Washington have used data from the
Kepler spacecraft to confirm that TRAPPIST-1h orbits its star every 19
days. At six million miles from its cool dwarf star, TRAPPIST-1h is located
beyond the outer edge of the habitable zone, and is likely too cold for life
as we know it.
Which word or phrase provides the best clue to the meaning of the
word habitable?

The phrase that provides the best clue to the meaning of the word habitable is "TRAPPIST-1h is located beyond the outer edge of the habitable zone, and is likely too cold for life as we know it."

Explanation:

This phrase provides the best clue because it is saying that it's not habitable, and that it's likely too cold for life. Habitable means that it is suitable for any life form. Likely too cold for life, can also be said as, "Not habitable".

i would say a because the main idea is what the author is the point the author is trying to get across.

consonant blends (also called consonant clusters) are groups of two or three consonants in words that makes a distinct consonant sound, such as "bl" or "spl." consonant digraphs include bl, br, ch, ck, cl, cr, dr, fl, fr, gh, gl, gr, ng, ph, pl, pr, qu, sc, sh, sk, sl, sm, sn, sp, st, sw, th, tr, tw, wh, wr.