You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Which location on Earth receives the most direct sunlight?  
 (A) the deserts (B) the South Pole (C) the equator (D) the Western Hemisphere
C

In humans, B is the allele for brown eyes and b is the allele for blue eyes. Two brothers both have brown eyes, but one of them has both the B and b alleles while the other only has B alleles. Which statement is true about the brothers?  
 (A) They have the same genotype and phenotype. (B) They have different phenotypes and genotypes. (C) They have the same phenotype but different genotypes. (D) They have the same genotype but different phenotypes.
C

A student is hiking through a forest taking pictures for science class. Which picture would most likely be used as an example of human impact on Earth?  
 (A) A trail built by cutting down trees (B) A river eroding away the riverbank (C) A bird nest made of dead branches (D) A group of butterflies landing on flowers

A