Which of the following sentences uses the present perfect correctly? olivia has estudiando mucho para la clase. olivia ha estudiado mucho para la clase. olivia ha estudiando mucho para la clase. olivia va a estudiar mucho para la clase.

The right answer is the C) Olivia ha estudiado mucho para la clase.

Explanation: Just to elaborate a little on the answer, it can be added that the present perfect in Spanish, as it does in English, combines the present tense of the verb haber (to have) and the participle of another verb (eaten/comido, said/dicho, and so on). The participle of the verb estudiar is estudiado, so options A and C are incorrect. Option D translates as "she is going to study," and that is not the present perfect, but the future.    

4) read the following excerpt. cognitive psychology has been widely developed, not only in brazil, but also in the world. it studies human intellectual capacities, analyzing the ways in which people solve mental tasks, and construct models for understanding such processes, understood from the information processing paradigm. this occurs through basic and superior cognitive processes. is one of the basic cognitive processes, considered the gateway to the stimuli that will be processed cognitively. through it we can extract meanings from the external environment, either through vision or through hearing. check the alternative that fits the gap correctly. select an alternative: a) perception. b) attention. c) memory. d) consciousness. e) intelligence.

a venn diagram (also known as a set diagram or logic diagram) is a diagram that shows all possible logical relations between a finite collection of different sets. they are thus a special case of euler diagrams, which do not necessarily show all relations. venn diagrams were conceived around 1880 by john venn.create a venn diagram showing all of the similarities and differences you can think of. do your best to put your comparison in spanish, and use everything you know about adjectives and comparison phrases in spanish.