In the following questions, a few sentences are given. Identify the sentences that are grammatically and contextually incorrect.

(I) The manager, along with her team, were discussing the upcoming project in great detail.

(II) If I would have known about the event earlier, I would have definitely attended it.

(III) The city has experienced a significant drop in crime rates, largely due to new safety measures

implemented last year.

The correct option is Both (I) and (II).

Let us analyze each sentence individually to identify grammatical errors:

Sentence (I): "The manager, along with her team, were discussing the upcoming project in great detail."
Grammar Rule: When a singular subject (here, "The manager") is connected to another noun using phrases like "along with", "together with", "as well as", or "in addition to", the verb must agree with the first main subject, not the secondary noun phrase.
Since "The manager" is singular, the verb should also be singular ("was" instead of "were").
Corrected Sentence (I): "The manager, along with her team, was discussing the upcoming project in great detail."
Hence, Sentence (I) is grammatically incorrect.

Sentence (II): "If I would have known about the event earlier, I would have definitely attended it."
Grammar Rule: In a third conditional sentence (describing an unreal past condition and its past outcome), the "if-clause" takes the past perfect tense (had + past participle), while the main clause takes would have + past participle. We do not use "would have" in the "if-clause".
Corrected Sentence (II): "If I had known about the event earlier, I would have definitely attended it."
Hence, Sentence (II) is grammatically incorrect.

Sentence (III): "The city has experienced a significant drop in crime rates, largely due to new safety measures implemented last year."
Analysis: Subject-verb agreement is correct, tense usage is appropriate, and sentence structure is logically sound.
Hence, Sentence (III) is grammatically and contextually correct.

Therefore, both sentences (I) and (II) are incorrect.