Final answer:
The word 'rank' has multiple meanings, and 'order' and 'sequence' are similar in meaning. 'Suggestion' is closest in meaning to 'hypothesis'. Sorting words by the letter before 'u' and understanding that an object speeding up does not produce a straight line on a position vs time graph are the tasks addressed.
Step-by-step explanation:
The word rank does indeed have multiple meanings, including a position within a hierarchy or the level of something's importance. The words order and sequence are indeed similar in meaning to one another; they both relate to the arrangement or the following of one thing after another, especially according to a particular method or system.
Regarding the word closest in meaning to hypothesis, the best choice would be d. suggestion. A hypothesis is essentially a proposed explanation for a phenomenon or a speculative assumption that is yet to be tested. It is not a fact, a law, a formula, or a conclusion, which are all different in nature.