if necessary, adjust the verb(s) below to fix any matching errors. original quote: a mars - sized planet…

if necessary, adjust the verb(s) below to fix any matching errors. original quote: a mars - sized planet appears to be lurking at the edge of the solar system, scientists have announced. according to an article in the astronomical journal, \a mars - sized planet appears to be lurking at the edge of the solar system.\

if necessary, adjust the verb(s) below to fix any matching errors. original quote: a mars - sized planet appears to be lurking at the edge of the solar system, scientists have announced. according to an article in the astronomical journal, \a mars - sized planet appears to be lurking at the edge of the solar system.\

Answer

Brief Explanations:

The verb "appears" in the quoted - text correctly matches the singular subject "a Mars - sized planet". There are no matching errors.

Answer:

No adjustment is needed.