Step 1. Simplify brackets

Step 2. Simplify
13
Done! :)
Your answer is A. 13 Hope this helps!
Answer:
the answer would be the first one which is sexual reproduction
Enzymes are also known as Biological catalysts. An enzyme working at its maximum possible rate, where the substrate concentration is in excess is <span>V max.
</span><span>The reaction is slow because the molecules are moving slowly and they will not often collide with the active site of an enzyme, so the binding of an enzyme and substrate is rare.</span>
1 - They all are solids due to the strong electrostatic force
<span>2 - They also have high m.p and b.p. </span>
<span>3 - It conduct electricity in molten state or in aqueous solutions </span>
adaptations.
Natural selection leads to traits called adaptations, which improve an organisms ability to survive and reproduce.