Question

developed for use in earthquake - prone regions, the seismobrick shifts and compresses to absorb seismic shock, locks into adjacent units using a steel interlocking pin system, ___ can prevent catastrophic collapse, remains secure even during major tremors. though engineers have successfully tested it in controlled conditions, real - world trials have revealed complications in scaling production and maintaining cost - efficiency.
17 ◇ mark for review
which choice completes the text so that it conforms to the conventions of standard english?
a and
b and it
c and rapid stability
d and, because rapid stability

Explanation:

To determine the correct choice, we analyze the sentence structure. The SeismoBrick's actions (shifts, compresses, locks) lead to a result: preventing collapse and remaining secure. We need a subject to refer to the SeismoBrick's system. Option A lacks a subject, making the clause incomplete. Option C introduces "rapid stability" which is not contextually appropriate. Option D introduces an unnecessary "because" that disrupts the flow. Option B uses "it" to refer to the SeismoBrick (or its system), creating a complete clause: "and it can prevent catastrophic collapse". This fits the sentence structure and conveys the intended meaning.

Answer:

B. and it