Question

determine word meanings using prefixes il-/ir- and fore- — quiz —
what is the meaning of \irreplaceable\ in these sentences?
the dinosaur bones at the science museum are irreplaceable. they are the only ones of that kind that have been discovered!
options:

• cannot be traded for something equal
• placed in front of something else
• not likely to last a long time
• very interesting to look at

Explanation:

To determine the meaning of "irreplaceable", we analyze the prefix "ir - " (meaning "not") and the root "replaceable" (able to be replaced). The sentence says the dinosaur bones are the only ones of their kind, so they can't be replaced with something equal. The other options don't fit: "placed in front" relates to "pre - " prefix, "not likely to last" is incorrect as the context is about uniqueness, and "very interesting" is unrelated to replacement.

Answer:

A. cannot be traded for something equal