Hector was excited to give his speech about space tourism. he conducted a lot of research about space technology and current spacecraft manufacturers who were beginning to get into the space tourism business. he began his speech with the question; "did you know that a white dwarf star is the weight of the sun, but has only the diameter of the earth. a cupful of white dwarf material weighs 22 tons! " then he went on to develop his credibility and preview his points about space tourism. why was his audience confused by this attention getter?
a. ait was too weird
b. bit was too scientific
c. cit was not relevant to the topic
d. dit was too long

C) it was not relevant to the topic

Explanation: The material collected for speech made by Hector was related with the topic of space tourism but when he started his speech with the question regarding the dwarf star,it created confusion to the audience.

The audience can understand that speech example at the start and the topic on which Hector is giving speech are not related with each other and thus, did not make sense.

Other options are incorrect because it was non-relevant rather than weird. It was not scientific or long.Thus, the correct options is option (C).

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals