Question

review the abstract and then answer the question.
gravity and drag both reduce the maximum altitude that a rocket can reach, increasing
the cost of rocket flights. this study hypothesizes that rockets with a smoother surface
will experience less drag and reach higher altitudes, given the same thrust as rockets
with rough surfaces. to test this hypothesis, three identical model rockets were
constructed and given finishes with varying degrees of surface smoothness: roughed with
40-grit sandpaper, unfinished, and glossed. each rocket was outfitted with b5-4 motors
and flown ten times. flight results support the initial hypothesis, with the roughened-
surface rocket reaching the apogee point at the lowest altitude and the glossed-surface
rocket reaching it at the highest. in conclusion, the findings suggest that smoother
surface finishes can reduce the drag force enough to affect altitude, thereby potentially
increasing rocket efficiency and reducing fuel costs.
which best indicates that the primary audience is academics in the field of engineering?
the writer uses words like hypothesis, results, and conclusion.
the writer doesnt use any words that would be unfamiliar to high school
students.
the writer uses specialized language such as drag, thrust, and apogee point.
the writer mentions that the surfaces had varying degrees of smoothness.

Explanation:

The question asks which option best indicates the primary audience is academics in engineering. The writer uses technical terms like "drag," "thrust," "apogee point," which are common in engineering. Terms like "hypothesis," "results," and "conclusion" are also academic. The other options either mention non - academic audiences (high school students) or lack specialized language.

Answer:

The writer uses words like hypothesis, results, and conclusion.