Tisha is laying on the floor watching television.

The correct answer is:  [A]:  " 39. 19 " .
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Explanation:
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{Note that our calculated answer; "39.39..." ;  is very close to the given answer choice:
   Answer choice:  [A]:  " 39. 19 " ;  and that none of the other answer choices provided are close to this number; so we go with the correct answer as: 
  Answer choice:   [A]:  " 39. 19 " .} . 
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Explanation:
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Given:
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First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.