Which sentence correctly substitutes the bolded phrase? **the bolded phrase is in capital ellos compraron el reloj pulsera. a. ellos lo compraron b. ellos la compraron c. ellos los compraron d. ellos las compraron

Option A. Ellos lo compraron. Reloj is the subject, and it is singular masculine.  
This question is asking for the english spanish version of the english "it." In spanish, the word "it" has four versions depending on gender and quantity. Lo is masculine singular, La is feminine singular, Los is masculine plural, and Las is feminine plural.

El planeta es de nosotros
the answer is d. el

Where’s the picture