Question

Sonnets whose lines each contain 10 syllables, with stresses on every second syllable, are written in ________.

Answer 1

The correct answer is "iambic pentameter"

The "iamb" is an unstressed syllable followed by a stressed one: and five of those would be called "pentameter" (from penta- (five) -meter). so in total it's 10 syllables with stress on every second syllable,