For those fluent in Spanish please help

El monte aconcagua,en argentina,mode 6,960 metros de altura .la península valdés ,en argentina ,está a 40 metros bajo el nivel del mar.¿cual es la diferencia en metros,de elevación entre estos dos lugares?

Question 20(multiple choice worth 1 points) (01.05 lc) read the sentence and select the one with the spelling or punctuation error or errors. —hola, maría. eres mi amiga. tu cumpleanos es hoy? tienes catorce años. a. hola, maría b. eres mi amiga. c. tu cumpleanos es hoy? d. tienes catorce años.

Which one of the following is a trick used in spanish to identify the right hand? touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase b is your mano derecha. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano izquierda. touch the tips of your index fingers with the tips of your thumbs. the hand that forms a lowercase d is your mano derecha.