Which pair of moving voices is forbidden in part-writing?

Two voices a perfect fifth apart moving in the same direction to another perfect fifth

How must the seventh of a seventh chord resolve?

Down by step to the third of the next chord

Both copies would resolve up to the tonic and create parallel octaves

A normally lower voice moves above a normally higher voice

The Roman numeral names the chord by scale degree and quality, leaving you to choose the spacing

Bass, then soprano, then alto and tenor

12questions. Pick an answer and you'll see why right away.

From highest to lowest, what are the four voices used in four-part writing?
Which pair of moving voices is forbidden in part-writing?
How does the leading tone (scale degree seven) typically resolve, especially in an outer voice or at a cadence?
How must the seventh of a seventh chord resolve?
In a root-position triad, which chord member is normally doubled?
Why should the leading tone never be doubled?
In figured bass, what inversion does the symbol 6 (a six over the bass note) indicate for a triad?
What is the maximum spacing recommended between two adjacent upper voices (for example soprano and alto)?
What does it mean for two voices to cross in four-part writing?
How does a Roman numeral differ from a figured bass in a part-writing question?
What is the safest order in which to write the four voices of a progression?
In a dominant seventh chord in C major (G, B, D, F), which note is the chordal seventh and how does it resolve?