Answer:
The history of West Africa has been commonly divided into its prehistory, the Iron Age in Africa, the major polities flourishing, the colonial period, and finally the post-independence era, in which the current nations were formed. West Africa is west of an imagined north-south axis lying close to 10° east ... The Ghana Empire may have been established as early as the 7th century ...
Explanation:
A sensor that is commonly used is the electromechanical design of a "gas dampened tube and ball." It is a sensor with nothing else but a tube that is small with a small switch at one of the ends and a steel ball that is gold at the other end. Its all held together by a magnet. If and when it receives a jolt that is hard enough, it can knock the magnet and loosen the ball and makes it roll down the tube and hit the switch to close the circuit. It will return to its original place because of the slanted design of the tube.
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The answer is:
The animals <em><u>scrambled </u></em>to get into the barn as the lightning <em><u>struck</u></em>.
In the chosen sentence, both verbs in the different clauses are consistent ad accurate because they are written in the Past Simple tense.
The rest of the options are incorrect because the tense of the verbs is not related to each other: they wrongly combine past and present, and present and future tenses.
The right version of them are the following:
<em>Alexander </em><em>finished </em><em>his math test and </em><em>walked </em><em>to Mr. Smith's desk.
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<em>
Sampson and Raina </em><em>watch </em><em>the fireworks and </em><em>comment </em><em>on how beautiful they are.
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<em>
The police officer </em><em>rounded </em><em>the corner and pumped his arms harder.</em>
The answer is notice key words and details.
Not sure what your choices are but
There is no guarantee about getting money back.
