You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

Question: Leo is working in a lab studying genotypes. He notices that the genotypes that are more fit produce 
 Option1: less offspring. 
 Option2: more offspring 
 Explanation: Genotypes with greater fitness produce more offspring and pass more copies of their alleles to the next generation.
more offspring

Question: Jeffrey increases the number of carbon atoms to a natural gas hydrocarbon in a lab. The isomers 
 Option1: increase 
 Option2: decrease 
 Explanation: As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.
increase

Question: If a system gives off a lot of heat then it is 
 Option1: effective 
 Option2: wasteful 
 Explanation: The greater the wasted output energy, the less efficient the system.

wasteful