Which best describes the alternation of generations? fertilization produces haploid spores. meiosis produces a diploid zygote. a gametophyte is a diploid phase. a gametophyte is a haploid phase.

the correct answer is C

Explanation:

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when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.