1. How many prepositional phrases are in this sentence: Put the lasagna in the oven for me please.

A. 1
B. 2***<<<my answer
C. 3

2. What is the appositive in this sentence: My sister, Mary, is a student at Louisianan Tech.
A. my sister
B. My sister, Mary****<<<My answer
C. Mary
D. student

1. is right

2. is wrong. The appositive is only one word.

http://www.chompchomp.com/terms/appositive.htm

1. To determine the number of prepositional phrases in the sentence "Put the lasagna in the oven for me please," we need to first identify the prepositional phrases.

A prepositional phrase consists of a preposition followed by its object (noun, pronoun, or gerund).

In this sentence, there are two prepositional phrases: "in the oven" and "for me."

Therefore, the correct answer is B. 2.

To arrive at this answer, you can follow these steps:
1. Identify the prepositions in the sentence. In this case, the prepositions are "in" and "for."
2. Identify the objects of the prepositions. The objects of the prepositions are "the oven" and "me."
3. Count the number of prepositional phrases. In this case, there are two prepositional phrases, so the answer is 2.

2. To determine the appositive in the sentence "My sister, Mary, is a student at Louisiana Tech," we need to identify the noun or noun phrase that renames or identifies another noun or noun phrase.

In this sentence, the appositive is "Mary." It renames or identifies the noun "My sister."

Therefore, the correct answer is B. My sister, Mary.

To arrive at this answer, you can follow these steps:
1. Identify the noun or noun phrase that could be appositive in the sentence. In this case, it is "Mary."
2. Determine whether the appositive renames or identifies another noun or noun phrase. In this case, "Mary" renames the noun "My sister."
3. Identify the complete appositive phrase. In this case, the complete appositive phrase is "My sister, Mary."