The letter 'H' is never pronounced in Spanish. Such examples are "hasta", "horchata", and "humanos". The letter "H" is almost always used exclusively as the first letter in words, but it may be used in the middle of words such as "mucho" or "hechar", where it makes a "ch" sound.
Tu viajarias por el mundo entero.
With expressions such as 'es raro que' you need to use the subjunctive form of a verb which is slightly different than the present, indicative form. So, the 'normal' form of ir for third person plural would be van. However, we need the subjunctive form here, which is vayan.
This means that the correct answer is A. Vayan a la escuela los sabados.
The form ven doesn't exist.