Polyphenylene ether, resin composition, and molded body of resin composition

A resin composition comprising:na polyphenylene ether (a) comprising 5 to 20% by mass of a component having a molecular weight of 50,000 or more and 12 to 30% by mass of a component having a molecular weight of 8,000 or less, the molecular weights being measured by gel permeation chromatography;a hydrogenated block copolymer (b) prepared by hydrogenating a block copolymer comprising at least two polymer blocks A mainly containing a vinyl aromatic compound and at least one polymer block B mainly containing a conjugated diene compound, wherein a number average molecular weight (Mnb) of the hydrogenated block copolymer is 100,000 or less, and a number average molecular weight (MnbA) of at least one polymer block of the polymer blocks A is 8,000 or more; anda polypropylene (c),wherein an amount of the polyphenylene ether (a) is 1 to 99% by mass and an amount of the hydrogenated block copolymer (b) is 99 to 1% by mass where a total amount of the polyphenylene ether (a) and the hydrogenated block copolymer (b) is 100% by mass, andan amount of the polypropylene (c) is 1 to 95% by mass where a total amount of the components (a) to (c) is 100% by mass,wherein in a bonding form of the conjugated diene compound in the polymer block B in the hydrogenated block copolymer (b), a total amount of the conjugated diene compound bonded with a 1,2-vinyl bond or a 3,4-vinyl bond is 70 to 90% by mass based on all the conjugated diene compounds that form the polymer block B, andwherein a content of the polymer blocks A in the hydrogenated block copolymer (b) is 15 to 50% by mass based on the entire hydrogenated block copolymer (b).