you(s) own vs you(p) own

[Obas]

English Grammar Tests, Elementary Level

ESL/EFL Test #194 "Comprehension Sentences (1)", question 5

Linda and Michael own a Honda and a Toyota. .........

(a) They have two cars.
(b) Linda owns a Nissan.
(c) They have one car but hope to buy another one soon.
(d) Michael wants one of the cars.

English Grammar Tests, Elementary Level

ESL/EFL Test #194 "Comprehension Sentences (1)", answer 5

Linda and Michael own a Honda and a Toyota. They have two cars.

Correct answer: (a) They have two cars.
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owns?

Obas

[Beeesneees]

'owns' would be wrong because the verb 'to own' in the simple present tense is conjugated like this:
I own, we own,
you(s) own, you(p) own,
s/he owns, they own.

Linda and Michael = they.

They own a Honda...
Linda and Michael own a Honda...
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Cheers m' dears!